666560275 has 6 divisors (see below), whose sum is σ = 826534772. Its totient is φ = 533248200.

The previous prime is 666560269. The next prime is 666560317. The reversal of 666560275 is 572065666.

It is not a de Polignac number, because 666560275 - 2⁹ = 666559763 is a prime.

It is a Duffinian 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, 13331181 + ... + 13331230.

Almost surely, 2^666560275 is an apocalyptic number.

666560275 is a deficient number, since it is larger than the sum of its proper divisors (159974497).

666560275 is a wasteful number, since it uses less digits than its factorization.

666560275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26662421 (or 26662416 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 43.

The square root of 666560275 is about 25817.8286267455. The cubic root of 666560275 is about 873.5339914232.

The spelling of 666560275 in words is "six hundred sixty-six million, five hundred sixty thousand, two hundred seventy-five".