78966256 has 10 divisors (see below), whose sum is σ = 152997152. Its totient is φ = 39483120.

The previous prime is 78966253. The next prime is 78966257. The reversal of 78966256 is 65266987.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78966253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2467680 + ... + 2467711.

Almost surely, 2^78966256 is an apocalyptic number.

It is an amenable number.

78966256 is a deficient number, since it is larger than the sum of its proper divisors (74030896).

78966256 is a wasteful number, since it uses less digits than its factorization.

78966256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4935399 (or 4935393 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 78966256 is about 8886.2959662618. The cubic root of 78966256 is about 429.0229411248.

The spelling of 78966256 in words is "seventy-eight million, nine hundred sixty-six thousand, two hundred fifty-six".