5978

5978 is a natural number following 5977 and preceding 5979. It is an even composite integer with prime factorization 2 × 7^2 × 61.

Mathematical properties include 12 positive divisors: 1, 2, 7, 14, 49, 61, 98, 122, 427, 854, 2989, and 5978. The sum of all divisors is 10,602, so the sum of proper divisors (the aliquot sum) is 4,624, making 5978 a deficient number. Euler’s totient function yields φ(5978) = 2,520. In hexadecimal it is 0x175A and in binary 1011101011010. The digit sum of 5978 is 29.

5978 is not a perfect square, not triangular, and not prime. Its factor structure (including the square factor 7^2) gives it a moderate number of divisors for a four-digit integer. In calendrical terms, the year 5978 CE lies far in the future and is part of the 6th millennium. The number otherwise has no widely recognized special cultural or scientific significance beyond its arithmetic properties.