77697168 has 40 divisors (see below), whose sum is σ = 201781728. Its totient is φ = 25761792.

The previous prime is 77697167. The next prime is 77697187. The reversal of 77697168 is 86179677.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 77697168.

It is not an unprimeable number, because it can be changed into a prime (77697167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5071 + ... + 13457.

Almost surely, 2^77697168 is an apocalyptic number.

It is an amenable number.

77697168 is an abundant number, since it is smaller than the sum of its proper divisors (124084560).

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

77697168 is a wasteful number, since it uses less digits than its factorization.

77697168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8591 (or 8585 counting only the distinct ones).

The product of its digits is 889056, while the sum is 51.

The square root of 77697168 is about 8814.5997073038. The cubic root of 77697168 is about 426.7122032562.

The spelling of 77697168 in words is "seventy-seven million, six hundred ninety-seven thousand, one hundred sixty-eight".