12722564 has 6 divisors (see below), whose sum is σ = 22264494. Its totient is φ = 6361280.

The previous prime is 12722543. The next prime is 12722573. The reversal of 12722564 is 46522721.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8065600 + 4656964 = 2840^2 + 2158^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1590317 + ... + 1590324.

It is an arithmetic number, because the mean of its divisors is an integer number (3710749).

Almost surely, 2^12722564 is an apocalyptic number.

It is an amenable number.

12722564 is a deficient number, since it is larger than the sum of its proper divisors (9541930).

12722564 is a wasteful number, since it uses less digits than its factorization.

12722564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3180645 (or 3180643 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 12722564 is about 3566.8703368640. The cubic root of 12722564 is about 233.4487474382.

It can be divided in two parts, 12 and 722564, that multiplied together give a palindrome (8670768).

The spelling of 12722564 in words is "twelve million, seven hundred twenty-two thousand, five hundred sixty-four".