78754656 has 24 divisors (see below), whose sum is σ = 206731224. Its totient is φ = 26251520.

The previous prime is 78754651. The next prime is 78754673. The reversal of 78754656 is 65645787.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78754651) 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, 410085 + ... + 410276.

It is an arithmetic number, because the mean of its divisors is an integer number (8613801).

Almost surely, 2^78754656 is an apocalyptic number.

It is an amenable number.

78754656 is an abundant number, since it is smaller than the sum of its proper divisors (127976568).

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

78754656 is a wasteful number, since it uses less digits than its factorization.

78754656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820374 (or 820366 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The square root of 78754656 is about 8874.3820066526. The cubic root of 78754656 is about 428.6393913806.

The spelling of 78754656 in words is "seventy-eight million, seven hundred fifty-four thousand, six hundred fifty-six".