12861507 has 16 divisors (see below), whose sum is σ = 17521920. Its totient is φ = 8390112.

The previous prime is 12861493. The next prime is 12861517. The reversal of 12861507 is 70516821.

It is not a de Polignac number, because 12861507 - 2⁷ = 12861379 is a prime.

It is a super-2 number, since 2×12861507² = 330836724622098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12861517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32869 + ... + 33257.

It is an arithmetic number, because the mean of its divisors is an integer number (1095120).

Almost surely, 2^12861507 is an apocalyptic number.

12861507 is a deficient number, since it is larger than the sum of its proper divisors (4660413).

12861507 is a wasteful number, since it uses less digits than its factorization.

12861507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 12861507 is about 3586.2943270178. The cubic root of 12861507 is about 234.2955029231.

The spelling of 12861507 in words is "twelve million, eight hundred sixty-one thousand, five hundred seven".