78605164 has 24 divisors (see below), whose sum is σ = 151070976. Its totient is φ = 35490000.

The previous prime is 78605143. The next prime is 78605179. The reversal of 78605164 is 46150687.

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, 729 + ... + 12559.

It is an arithmetic number, because the mean of its divisors is an integer number (6294624).

Almost surely, 2^78605164 is an apocalyptic number.

It is an amenable number.

78605164 is a deficient number, since it is larger than the sum of its proper divisors (72465812).

78605164 is a wasteful number, since it uses less digits than its factorization.

78605164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11997 (or 11995 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 78605164 is about 8865.9553348751. The cubic root of 78605164 is about 428.3680053220.

The spelling of 78605164 in words is "seventy-eight million, six hundred five thousand, one hundred sixty-four".