78860656 has 40 divisors (see below), whose sum is σ = 175814144. Its totient is φ = 33566400.

The previous prime is 78860651. The next prime is 78860669. The reversal of 78860656 is 65606887.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78860651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14581 + ... + 19243.

Almost surely, 2^78860656 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 78860656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87907072).

78860656 is an abundant number, since it is smaller than the sum of its proper divisors (96953488).

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

78860656 is a wasteful number, since it uses less digits than its factorization.

78860656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4829 (or 4823 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 78860656 is about 8880.3522452660. The cubic root of 78860656 is about 428.8316145381.

The spelling of 78860656 in words is "seventy-eight million, eight hundred sixty thousand, six hundred fifty-six".