77213704 has 16 divisors (see below), whose sum is σ = 145274220. Its totient is φ = 38473920.

The previous prime is 77213693. The next prime is 77213723. The reversal of 77213704 is 40731277.

It can be written as a sum of positive squares in 2 ways, for example, as 59320804 + 17892900 = 7702^2 + 4230^2 .

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, 14127 + ... + 18814.

Almost surely, 2^77213704 is an apocalyptic number.

It is an amenable number.

77213704 is a deficient number, since it is larger than the sum of its proper divisors (68060516).

77213704 is a wasteful number, since it uses less digits than its factorization.

77213704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33240 (or 33236 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 77213704 is about 8787.1328657304. The cubic root of 77213704 is about 425.8253010520.

The spelling of 77213704 in words is "seventy-seven million, two hundred thirteen thousand, seven hundred four".