78730660 has 24 divisors (see below), whose sum is σ = 169368696. Its totient is φ = 30723840.

The previous prime is 78730657. The next prime is 78730697. The reversal of 78730660 is 6603787.

It can be written as a sum of positive squares in 4 ways, for example, as 6718464 + 72012196 = 2592^2 + 8486^2 .

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, 47187 + ... + 48826.

It is an arithmetic number, because the mean of its divisors is an integer number (7057029).

Almost surely, 2^78730660 is an apocalyptic number.

It is an amenable number.

78730660 is an abundant number, since it is smaller than the sum of its proper divisors (90638036).

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

78730660 is a wasteful number, since it uses less digits than its factorization.

78730660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96063 (or 96061 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 78730660 is about 8873.0299221855. The cubic root of 78730660 is about 428.5958524705.

The spelling of 78730660 in words is "seventy-eight million, seven hundred thirty thousand, six hundred sixty".