74831656 has 8 divisors (see below), whose sum is σ = 140309370. Its totient is φ = 37415824.

The previous prime is 74831641. The next prime is 74831677. The reversal of 74831656 is 65613847.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 45346756 + 29484900 = 6734^2 + 5430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4676971 + ... + 4676986.

Almost surely, 2^74831656 is an apocalyptic number.

It is an amenable number.

74831656 is a deficient number, since it is larger than the sum of its proper divisors (65477714).

74831656 is a wasteful number, since it uses less digits than its factorization.

74831656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9353963 (or 9353959 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 74831656 is about 8650.5292323649. The cubic root of 74831656 is about 421.4005699949.

The spelling of 74831656 in words is "seventy-four million, eight hundred thirty-one thousand, six hundred fifty-six".