12761564 has 12 divisors (see below), whose sum is σ = 22366344. Its totient is φ = 6371184.

The previous prime is 12761561. The next prime is 12761591. The reversal of 12761564 is 46516721.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12761564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12761561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187 + ... + 5189.

It is an arithmetic number, because the mean of its divisors is an integer number (1863862).

Almost surely, 2^12761564 is an apocalyptic number.

It is an amenable number.

12761564 is a deficient number, since it is larger than the sum of its proper divisors (9604780).

12761564 is a wasteful number, since it uses less digits than its factorization.

12761564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4804 (or 4802 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 12761564 is about 3572.3331311623. Note that the first 3 decimals coincide. The cubic root of 12761564 is about 233.6870435847.

The spelling of 12761564 in words is "twelve million, seven hundred sixty-one thousand, five hundred sixty-four".