197945

197945 is a natural number that follows 197944 and precedes 197946. In decimal notation it ends with the digit 5, indicating it is divisible by 5, and it is an odd number.

Its prime factorization is 197945 = 5 × 11 × 59 × 61. All prime factors are distinct, so the number is squarefree. Consequently, it has 2^4 = 16 positive divisors. The sum of all divisors is (1+5)(1+11)(1+59)(1+61) = 6 × 12 × 60 × 62 = 267840. The sum of proper divisors is 267840 − 197945 = 69895, which is less than 197945, so 197945 is a deficient number. The deficiency is 197945 − 69895 = 128050.

Additional notes: the prime factors 5, 11, 59, and 61 include 59 and 61, which are twin primes. The digit sum of 197945 is 35, so the number is not divisible by 3 or 9. Beyond its factorization properties, 197945 does not have a widely recognized special significance in standard mathematical sequences or well-known applications.