78964964 has 24 divisors (see below), whose sum is σ = 149163840. Its totient is φ = 36360864.

The previous prime is 78964943. The next prime is 78964973. The reversal of 78964964 is 46946987.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24647 + ... + 27665.

It is an arithmetic number, because the mean of its divisors is an integer number (6215160).

Almost surely, 2^78964964 is an apocalyptic number.

It is an amenable number.

78964964 is a deficient number, since it is larger than the sum of its proper divisors (70198876).

78964964 is a wasteful number, since it uses less digits than its factorization.

78964964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3539 (or 3537 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 53.

The square root of 78964964 is about 8886.2232697586. The cubic root of 78964964 is about 429.0206013040.

The spelling of 78964964 in words is "seventy-eight million, nine hundred sixty-four thousand, nine hundred sixty-four".