77696064 has 56 divisors (see below), whose sum is σ = 228417120. Its totient is φ = 25898112.

The previous prime is 77696057. The next prime is 77696071. The reversal of 77696064 is 46069677.

It is an interprime number because it is at equal distance from previous prime (77696057) and next prime (77696071).

It is a super-2 number, since 2×77696064² = 12073356722184192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20754 + ... + 24209.

Almost surely, 2^77696064 is an apocalyptic number.

It is an amenable number.

77696064 is an abundant number, since it is smaller than the sum of its proper divisors (150721056).

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

77696064 is a wasteful number, since it uses less digits than its factorization.

77696064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44984 (or 44968 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 77696064 is about 8814.5370837044. The cubic root of 77696064 is about 426.7101821937.

The spelling of 77696064 in words is "seventy-seven million, six hundred ninety-six thousand, sixty-four".