77311712 has 24 divisors (see below), whose sum is σ = 154791000. Its totient is φ = 37999744.

The previous prime is 77311681. The next prime is 77311739. The reversal of 77311712 is 21711377.

It is a congruent number.

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, 18587 + ... + 22362.

It is an arithmetic number, because the mean of its divisors is an integer number (6449625).

Almost surely, 2^77311712 is an apocalyptic number.

It is an amenable number.

77311712 is an abundant number, since it is smaller than the sum of its proper divisors (77479288).

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

77311712 is a wasteful number, since it uses less digits than its factorization.

77311712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41018 (or 41010 counting only the distinct ones).

The product of its digits is 2058, while the sum is 29.

The square root of 77311712 is about 8792.7078877897. The cubic root of 77311712 is about 426.0053927477.

The spelling of 77311712 in words is "seventy-seven million, three hundred eleven thousand, seven hundred twelve".