564561236 has 6 divisors (see below), whose sum is σ = 987982170. Its totient is φ = 282280616.

The previous prime is 564561203. The next prime is 564561251. The reversal of 564561236 is 632165465.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 559038736 + 5522500 = 23644^2 + 2350^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 564561236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70570151 + ... + 70570158.

It is an arithmetic number, because the mean of its divisors is an integer number (164663695).

Almost surely, 2^564561236 is an apocalyptic number.

It is an amenable number.

564561236 is a deficient number, since it is larger than the sum of its proper divisors (423420934).

564561236 is a wasteful number, since it uses less digits than its factorization.

564561236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141140313 (or 141140311 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 564561236 is about 23760.4973853663. The cubic root of 564561236 is about 826.4888870072.

The spelling of 564561236 in words is "five hundred sixty-four million, five hundred sixty-one thousand, two hundred thirty-six".