12688575 has 12 divisors (see below), whose sum is σ = 20978568. Its totient is φ = 6767200.

The previous prime is 12688567. The next prime is 12688589. The reversal of 12688575 is 57588621.

It is not a de Polignac number, because 12688575 - 2³ = 12688567 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, 84516 + ... + 84665.

It is an arithmetic number, because the mean of its divisors is an integer number (1748214).

Almost surely, 2^12688575 is an apocalyptic number.

12688575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12688575 is a deficient number, since it is larger than the sum of its proper divisors (8289993).

12688575 is a wasteful number, since it uses less digits than its factorization.

12688575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169194 (or 169189 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 12688575 is about 3562.1026094148. The cubic root of 12688575 is about 233.2406718238.

It can be divided in two parts, 126 and 88575, that multiplied together give a triangular number (11160450 = T₄₇₂₄).

The spelling of 12688575 in words is "twelve million, six hundred eighty-eight thousand, five hundred seventy-five".