565406256 has 80 divisors (see below), whose sum is σ = 1542976640. Its totient is φ = 177914880.

The previous prime is 565406249. The next prime is 565406321. The reversal of 565406256 is 652604565.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300936 + ... + 302808.

It is an arithmetic number, because the mean of its divisors is an integer number (19287208).

Almost surely, 2^565406256 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 565406256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771488320).

565406256 is an abundant number, since it is smaller than the sum of its proper divisors (977570384).

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

565406256 is a wasteful number, since it uses less digits than its factorization.

565406256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234 (or 2228 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 565406256 is about 23778.2727715871. The cubic root of 565406256 is about 826.9010368536.

The spelling of 565406256 in words is "five hundred sixty-five million, four hundred six thousand, two hundred fifty-six".