78634968 has 16 divisors (see below), whose sum is σ = 196587480. Its totient is φ = 26211648.

The previous prime is 78634961. The next prime is 78634973. The reversal of 78634968 is 86943687.

It is a super-2 number, since 2×78634968² = 12366916384722048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78634968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78634961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1638205 + ... + 1638252.

Almost surely, 2^78634968 is an apocalyptic number.

It is an amenable number.

78634968 is an abundant number, since it is smaller than the sum of its proper divisors (117952512).

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

78634968 is a wasteful number, since it uses less digits than its factorization.

78634968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276466 (or 3276462 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 78634968 is about 8867.6359871163. The cubic root of 78634968 is about 428.4221386051.

The spelling of 78634968 in words is "seventy-eight million, six hundred thirty-four thousand, nine hundred sixty-eight".