565155616 has 48 divisors (see below), whose sum is σ = 1183079520. Its totient is φ = 264832000.

The previous prime is 565155611. The next prime is 565155623. The reversal of 565155616 is 616551565.

It is not an unprimeable number, because it can be changed into a prime (565155611) 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, 134475 + ... + 138613.

It is an arithmetic number, because the mean of its divisors is an integer number (24647490).

Almost surely, 2^565155616 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 565155616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (591539760).

565155616 is an abundant number, since it is smaller than the sum of its proper divisors (617923904).

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

565155616 is a wasteful number, since it uses less digits than its factorization.

565155616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417 (or 4409 counting only the distinct ones).

The product of its digits is 135000, while the sum is 40.

The square root of 565155616 is about 23773.0018298069. The cubic root of 565155616 is about 826.7788326238.

The spelling of 565155616 in words is "five hundred sixty-five million, one hundred fifty-five thousand, six hundred sixteen".