77042656 has 12 divisors (see below), whose sum is σ = 151677792. Its totient is φ = 38521312.

The previous prime is 77042653. The next prime is 77042671. The reversal of 77042656 is 65624077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77042653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1203760 + ... + 1203823.

It is an arithmetic number, because the mean of its divisors is an integer number (12639816).

Almost surely, 2^77042656 is an apocalyptic number.

It is an amenable number.

77042656 is a deficient number, since it is larger than the sum of its proper divisors (74635136).

77042656 is a wasteful number, since it uses less digits than its factorization.

77042656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407593 (or 2407585 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 77042656 is about 8777.3946020445. The cubic root of 77042656 is about 425.5106314512.

The spelling of 77042656 in words is "seventy-seven million, forty-two thousand, six hundred fifty-six".