77670932 has 12 divisors (see below), whose sum is σ = 140611380. Its totient is φ = 37496256.

The previous prime is 77670913. The next prime is 77671003. The reversal of 77670932 is 23907677.

It can be written as a sum of positive squares in 2 ways, for example, as 62663056 + 15007876 = 7916^2 + 3874^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77670932.

It is a congruent number.

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, 334673 + ... + 334904.

It is an arithmetic number, because the mean of its divisors is an integer number (11717615).

Almost surely, 2^77670932 is an apocalyptic number.

It is an amenable number.

77670932 is a deficient number, since it is larger than the sum of its proper divisors (62940448).

77670932 is a wasteful number, since it uses less digits than its factorization.

77670932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669610 (or 669608 counting only the distinct ones).

The product of its (nonzero) digits is 111132, while the sum is 41.

The square root of 77670932 is about 8813.1113688640. Note that the first 3 decimals coincide. The cubic root of 77670932 is about 426.6641685509.

The spelling of 77670932 in words is "seventy-seven million, six hundred seventy thousand, nine hundred thirty-two".