12665575 has 12 divisors (see below), whose sum is σ = 16913848. Its totient is φ = 9352800.

The previous prime is 12665563. The next prime is 12665593. The reversal of 12665575 is 57556621.

It is not a de Polignac number, because 12665575 - 2²³ = 4276967 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19161 + ... + 19810.

Almost surely, 2^12665575 is an apocalyptic number.

12665575 is a deficient number, since it is larger than the sum of its proper divisors (4248273).

12665575 is a wasteful number, since it uses less digits than its factorization.

12665575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38994 (or 38989 counting only the distinct ones).

The product of its digits is 63000, while the sum is 37.

The square root of 12665575 is about 3558.8727147792. The cubic root of 12665575 is about 233.0996583512.

The spelling of 12665575 in words is "twelve million, six hundred sixty-five thousand, five hundred seventy-five".