78675688 has 64 divisors (see below), whose sum is σ = 184383360. Its totient is φ = 30640896.

The previous prime is 78675671. The next prime is 78675731. The reversal of 78675688 is 88657687.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47970 + ... + 49582.

It is an arithmetic number, because the mean of its divisors is an integer number (2880990).

Almost surely, 2^78675688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78675688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92191680).

78675688 is an abundant number, since it is smaller than the sum of its proper divisors (105707672).

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

78675688 is a wasteful number, since it uses less digits than its factorization.

78675688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706 (or 1702 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 55.

The square root of 78675688 is about 8869.9316795565. The cubic root of 78675688 is about 428.4960766147.

It can be divided in two parts, 7 and 8675688, that added together give a triangular number (8675695 = T₄₁₆₅).

The spelling of 78675688 in words is "seventy-eight million, six hundred seventy-five thousand, six hundred eighty-eight".