76984978 has 16 divisors (see below), whose sum is σ = 134668800. Its totient is φ = 32993268.

The previous prime is 76984969. The next prime is 76985009. The reversal of 76984978 is 87948967.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55426 + ... + 56797.

It is an arithmetic number, because the mean of its divisors is an integer number (8416800).

Almost surely, 2^76984978 is an apocalyptic number.

76984978 is a deficient number, since it is larger than the sum of its proper divisors (57683822).

76984978 is a wasteful number, since it uses less digits than its factorization.

76984978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112246 (or 112232 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 58.

The square root of 76984978 is about 8774.1083877509. The cubic root of 76984978 is about 425.4044187347.

The spelling of 76984978 in words is "seventy-six million, nine hundred eighty-four thousand, nine hundred seventy-eight".