78764568 has 16 divisors (see below), whose sum is σ = 196911480. Its totient is φ = 26254848.

The previous prime is 78764561. The next prime is 78764573. The reversal of 78764568 is 86546787.

It is a self number, because there is not a number n which added to its sum of digits gives 78764568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78764561) 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, 1640905 + ... + 1640952.

Almost surely, 2^78764568 is an apocalyptic number.

It is an amenable number.

78764568 is an abundant number, since it is smaller than the sum of its proper divisors (118146912).

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

78764568 is a wasteful number, since it uses less digits than its factorization.

78764568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281866 (or 3281862 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 51.

The square root of 78764568 is about 8874.9404505044. The cubic root of 78764568 is about 428.6573733668.

The spelling of 78764568 in words is "seventy-eight million, seven hundred sixty-four thousand, five hundred sixty-eight".