563661316 has 24 divisors (see below), whose sum is σ = 1045431576. Its totient is φ = 264998400.

The previous prime is 563661311. The next prime is 563661349. The reversal of 563661316 is 613166365.

It can be written as a sum of positive squares in 4 ways, for example, as 193098816 + 370562500 = 13896^2 + 19250^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (563661311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80766 + ... + 87466.

It is an arithmetic number, because the mean of its divisors is an integer number (43559649).

Almost surely, 2^563661316 is an apocalyptic number.

It is an amenable number.

563661316 is a deficient number, since it is larger than the sum of its proper divisors (481770260).

563661316 is a wasteful number, since it uses less digits than its factorization.

563661316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7959 (or 7957 counting only the distinct ones).

The product of its digits is 58320, while the sum is 37.

The square root of 563661316 is about 23741.5525187381. The cubic root of 563661316 is about 826.0495077878.

The spelling of 563661316 in words is "five hundred sixty-three million, six hundred sixty-one thousand, three hundred sixteen".