563780916 has 18 divisors (see below), whose sum is σ = 1425112962. Its totient is φ = 187926960.

The previous prime is 563780897. The next prime is 563780923. The reversal of 563780916 is 619087365.

It is a happy number.

563780916 is a `hidden beast` number, since 5 + 637 + 8 + 0 + 9 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 561690000 + 2090916 = 23700^2 + 1446^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7830255 + ... + 7830326.

Almost surely, 2^563780916 is an apocalyptic number.

It is an amenable number.

563780916 is an abundant number, since it is smaller than the sum of its proper divisors (861332046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

563780916 is a wasteful number, since it uses less digits than its factorization.

563780916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15660591 (or 15660586 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 563780916 is about 23744.0711757693. The cubic root of 563780916 is about 826.1079285282.

The spelling of 563780916 in words is "five hundred sixty-three million, seven hundred eighty thousand, nine hundred sixteen".