22605764 has 12 divisors (see below), whose sum is σ = 40102524. Its totient is φ = 11147904.

The previous prime is 22605749. The next prime is 22605769. The reversal of 22605764 is 46750622.

It can be written as a sum of positive squares in 2 ways, for example, as 11847364 + 10758400 = 3442^2 + 3280^2 .

It is a super-2 number, since 2×22605764² = 1022041132047392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22605764.

It is not an unprimeable number, because it can be changed into a prime (22605769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38417 + ... + 39000.

It is an arithmetic number, because the mean of its divisors is an integer number (3341877).

Almost surely, 2^22605764 is an apocalyptic number.

It is an amenable number.

22605764 is a deficient number, since it is larger than the sum of its proper divisors (17496760).

22605764 is a wasteful number, since it uses less digits than its factorization.

22605764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77494 (or 77492 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 22605764 is about 4754.5519242091. The cubic root of 22605764 is about 282.7524628559.

The spelling of 22605764 in words is "twenty-two million, six hundred five thousand, seven hundred sixty-four".