76978 has 8 divisors (see below), whose sum is σ = 126000. Its totient is φ = 34980.

The previous prime is 76963. The next prime is 76991. The reversal of 76978 is 87967.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×76978² = 11851224968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1728 + ... + 1771.

It is an arithmetic number, because the mean of its divisors is an integer number (15750).

2⁷⁶⁹⁷⁸ is an apocalyptic number.

76978 is a deficient number, since it is larger than the sum of its proper divisors (49022).

76978 is a wasteful number, since it uses less digits than its factorization.

76978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512.

The product of its digits is 21168, while the sum is 37.

The square root of 76978 is about 277.4490944300. The cubic root of 76978 is about 42.5391565311.

The spelling of 76978 in words is "seventy-six thousand, nine hundred seventy-eight".