78716580 has 48 divisors (see below), whose sum is σ = 229993344. Its totient is φ = 20078080.

The previous prime is 78716513. The next prime is 78716593. The reversal of 78716580 is 8561787.

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, 27141 + ... + 29900.

It is an arithmetic number, because the mean of its divisors is an integer number (4791528).

Almost surely, 2^78716580 is an apocalyptic number.

It is an amenable number.

78716580 is an abundant number, since it is smaller than the sum of its proper divisors (151276764).

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

78716580 is a wasteful number, since it uses less digits than its factorization.

78716580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57076 (or 57074 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 78716580 is about 8872.2364711498. The cubic root of 78716580 is about 428.5703012669.

The spelling of 78716580 in words is "seventy-eight million, seven hundred sixteen thousand, five hundred eighty".