77995912 has 16 divisors (see below), whose sum is σ = 153939600. Its totient is φ = 36945360.

The previous prime is 77995903. The next prime is 77995919. The reversal of 77995912 is 21959977.

It is not an unprimeable number, because it can be changed into a prime (77995919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256414 + ... + 256717.

It is an arithmetic number, because the mean of its divisors is an integer number (9621225).

Almost surely, 2^77995912 is an apocalyptic number.

It is an amenable number.

77995912 is a deficient number, since it is larger than the sum of its proper divisors (75943688).

77995912 is a wasteful number, since it uses less digits than its factorization.

77995912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513156 (or 513152 counting only the distinct ones).

The product of its digits is 357210, while the sum is 49.

The square root of 77995912 is about 8831.5294258696. The cubic root of 77995912 is about 427.2584036681.

The spelling of 77995912 in words is "seventy-seven million, nine hundred ninety-five thousand, nine hundred twelve".