77213604 has 24 divisors (see below), whose sum is σ = 194024320. Its totient is φ = 23757984.

The previous prime is 77213603. The next prime is 77213623. The reversal of 77213604 is 40631277.

It is not an unprimeable number, because it can be changed into a prime (77213603) 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 7 ways as a sum of consecutive naturals, for example, 247324 + ... + 247635.

Almost surely, 2^77213604 is an apocalyptic number.

It is an amenable number.

77213604 is an abundant number, since it is smaller than the sum of its proper divisors (116810716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77213604 is a wasteful number, since it uses less digits than its factorization.

77213604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494979 (or 494977 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 77213604 is about 8787.1271755904. The cubic root of 77213604 is about 425.8251172221.

It can be divided in two parts, 7721 and 3604, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 77213604 in words is "seventy-seven million, two hundred thirteen thousand, six hundred four".