660079975 has 6 divisors (see below), whose sum is σ = 818499200. Its totient is φ = 528063960.

The previous prime is 660079949. The next prime is 660080027. The reversal of 660079975 is 579970066.

It is not a de Polignac number, because 660079975 - 2²¹ = 657982823 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13201575 + ... + 13201624.

Almost surely, 2^660079975 is an apocalyptic number.

660079975 is a deficient number, since it is larger than the sum of its proper divisors (158419225).

660079975 is a wasteful number, since it uses less digits than its factorization.

660079975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26403209 (or 26403204 counting only the distinct ones).

The product of its (nonzero) digits is 714420, while the sum is 49.

The square root of 660079975 is about 25692.0216215073. The cubic root of 660079975 is about 870.6939348359.

The spelling of 660079975 in words is "six hundred sixty million, seventy-nine thousand, nine hundred seventy-five".