660115308 has 12 divisors (see below), whose sum is σ = 1540269080. Its totient is φ = 220038432.

The previous prime is 660115307. The next prime is 660115331. The reversal of 660115308 is 803511066.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (660115301) 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, 27504793 + ... + 27504816.

Almost surely, 2^660115308 is an apocalyptic number.

It is an amenable number.

660115308 is an abundant number, since it is smaller than the sum of its proper divisors (880153772).

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

660115308 is a wasteful number, since it uses less digits than its factorization.

660115308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55009616 (or 55009614 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 660115308 is about 25692.7092382255. The cubic root of 660115308 is about 870.7094701655.

The spelling of 660115308 in words is "six hundred sixty million, one hundred fifteen thousand, three hundred eight".