565513920 has 448 divisors, whose sum is σ = 2154326400. Its totient is φ = 139345920.

The previous prime is 565513919. The next prime is 565513931. The reversal of 565513920 is 29315565.

565513920 is a `hidden beast` number, since 56 + 5 + 513 + 92 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9270690 + ... + 9270750.

Almost surely, 2^565513920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 565513920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1077163200).

565513920 is an abundant number, since it is smaller than the sum of its proper divisors (1588812480).

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

565513920 is a wasteful number, since it uses less digits than its factorization.

565513920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The square root of 565513920 is about 23780.5365793121. The cubic root of 565513920 is about 826.9535193663.

The spelling of 565513920 in words is "five hundred sixty-five million, five hundred thirteen thousand, nine hundred twenty".