77902968 has 64 divisors (see below), whose sum is σ = 228816000. Its totient is φ = 21790080.

The previous prime is 77902963. The next prime is 77903051. The reversal of 77902968 is 86920977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77902963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7918 + ... + 14781.

It is an arithmetic number, because the mean of its divisors is an integer number (3575250).

Almost surely, 2^77902968 is an apocalyptic number.

77902968 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

77902968 is an abundant number, since it is smaller than the sum of its proper divisors (150913032).

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

77902968 is a wasteful number, since it uses less digits than its factorization.

77902968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22732 (or 22728 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 77902968 is about 8826.2658015720. The cubic root of 77902968 is about 427.0886217379.

Subtracting 77902968 from its reverse (86920977), we obtain a square (9018009 = 3003²).

The spelling of 77902968 in words is "seventy-seven million, nine hundred two thousand, nine hundred sixty-eight".