77804368 has 20 divisors (see below), whose sum is σ = 150883200. Its totient is φ = 38866784.

The previous prime is 77804357. The next prime is 77804369. The reversal of 77804368 is 86340877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77804369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31233 + ... + 33631.

It is an arithmetic number, because the mean of its divisors is an integer number (7544160).

Almost surely, 2^77804368 is an apocalyptic number.

It is an amenable number.

77804368 is a deficient number, since it is larger than the sum of its proper divisors (73078832).

77804368 is a wasteful number, since it uses less digits than its factorization.

77804368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434 (or 4428 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 77804368 is about 8820.6784319575. The cubic root of 77804368 is about 426.9083602410.

The spelling of 77804368 in words is "seventy-seven million, eight hundred four thousand, three hundred sixty-eight".