77656004 has 12 divisors (see below), whose sum is σ = 141806784. Its totient is φ = 37139784.

The previous prime is 77656003. The next prime is 77656031. The reversal of 77656004 is 40065677.

It is not an unprimeable number, because it can be changed into a prime (77656001) 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 in 3 ways as a sum of consecutive naturals, for example, 421952 + ... + 422135.

It is an arithmetic number, because the mean of its divisors is an integer number (11817232).

Almost surely, 2^77656004 is an apocalyptic number.

It is an amenable number.

77656004 is a deficient number, since it is larger than the sum of its proper divisors (64150780).

77656004 is a wasteful number, since it uses less digits than its factorization.

77656004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844114 (or 844112 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 77656004 is about 8812.2644081984. The cubic root of 77656004 is about 426.6368324951.

The spelling of 77656004 in words is "seventy-seven million, six hundred fifty-six thousand, four".