666012575 has 12 divisors (see below), whose sum is σ = 841439448. Its totient is φ = 522756000.

The previous prime is 666012551. The next prime is 666012593. The reversal of 666012575 is 575210666.

It is not a de Polignac number, because 666012575 - 2²⁴ = 649235359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250001 + ... + 252650.

It is an arithmetic number, because the mean of its divisors is an integer number (70119954).

Almost surely, 2^666012575 is an apocalyptic number.

666012575 is a deficient number, since it is larger than the sum of its proper divisors (175426873).

666012575 is a wasteful number, since it uses less digits than its factorization.

666012575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502714 (or 502709 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 666012575 is about 25807.2194356540. The cubic root of 666012575 is about 873.2946703970.

The spelling of 666012575 in words is "six hundred sixty-six million, twelve thousand, five hundred seventy-five".