78616164 has 24 divisors (see below), whose sum is σ = 200114208. Its totient is φ = 23823040.

The previous prime is 78616163. The next prime is 78616207. The reversal of 78616164 is 46161687.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (78616163) 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, 297657 + ... + 297920.

It is an arithmetic number, because the mean of its divisors is an integer number (8338092).

Almost surely, 2^78616164 is an apocalyptic number.

It is an amenable number.

78616164 is an abundant number, since it is smaller than the sum of its proper divisors (121498044).

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

78616164 is a wasteful number, since it uses less digits than its factorization.

78616164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595595 (or 595593 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 78616164 is about 8866.5756636934. The cubic root of 78616164 is about 428.3879863175.

The spelling of 78616164 in words is "seventy-eight million, six hundred sixteen thousand, one hundred sixty-four".