224720564 has 12 divisors (see below), whose sum is σ = 394317924. Its totient is φ = 112058304.

The previous prime is 224720533. The next prime is 224720567. The reversal of 224720564 is 465027422.

It can be written as a sum of positive squares in 2 ways, for example, as 51008164 + 173712400 = 7142^2 + 13180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 224720564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224720567) 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, 73817 + ... + 76800.

It is an arithmetic number, because the mean of its divisors is an integer number (32859827).

Almost surely, 2^224720564 is an apocalyptic number.

It is an amenable number.

224720564 is a deficient number, since it is larger than the sum of its proper divisors (169597360).

224720564 is a wasteful number, since it uses less digits than its factorization.

224720564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150994 (or 150992 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 224720564 is about 14990.6825728517. The cubic root of 224720564 is about 607.9683047016.

Adding to 224720564 its reverse (465027422), we get a palindrome (689747986).

The spelling of 224720564 in words is "two hundred twenty-four million, seven hundred twenty thousand, five hundred sixty-four".