78782164 has 12 divisors (see below), whose sum is σ = 138955264. Its totient is φ = 39080664.

The previous prime is 78782117. The next prime is 78782167. The reversal of 78782164 is 46128787.

It is a self number, because there is not a number n which added to its sum of digits gives 78782164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78782167) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 77034 + ... + 78049.

Almost surely, 2^78782164 is an apocalyptic number.

It is an amenable number.

78782164 is a deficient number, since it is larger than the sum of its proper divisors (60173100).

78782164 is a wasteful number, since it uses less digits than its factorization.

78782164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155214 (or 155212 counting only the distinct ones).

The product of its digits is 150528, while the sum is 43.

The square root of 78782164 is about 8875.9317257401. The cubic root of 78782164 is about 428.6892916677.

The spelling of 78782164 in words is "seventy-eight million, seven hundred eighty-two thousand, one hundred sixty-four".