78790656 has 120 divisors (see below), whose sum is σ = 241165120. Its totient is φ = 22413312.

The previous prime is 78790637. The next prime is 78790661. The reversal of 78790656 is 65609787.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343950 + ... + 344178.

Almost surely, 2^78790656 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 78790656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120582560).

78790656 is an abundant number, since it is smaller than the sum of its proper divisors (162374464).

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

78790656 is an equidigital number, since it uses as much as digits as its factorization.

78790656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 78790656 is about 8876.4100851639. The cubic root of 78790656 is about 428.7046940485.

The spelling of 78790656 in words is "seventy-eight million, seven hundred ninety thousand, six hundred fifty-six".