12699564 has 24 divisors (see below), whose sum is σ = 30654960. Its totient is φ = 4087104.

The previous prime is 12699563. The next prime is 12699569. The reversal of 12699564 is 46599621.

It is a happy number.

12699564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12699564² = 322557851580192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12699563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17899 + ... + 18594.

It is an arithmetic number, because the mean of its divisors is an integer number (1277290).

Almost surely, 2^12699564 is an apocalyptic number.

It is an amenable number.

12699564 is an abundant number, since it is smaller than the sum of its proper divisors (17955396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12699564 is a wasteful number, since it uses less digits than its factorization.

12699564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36529 (or 36527 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 12699564 is about 3563.6447634409. The cubic root of 12699564 is about 233.3079854551.

The spelling of 12699564 in words is "twelve million, six hundred ninety-nine thousand, five hundred sixty-four".