564170838 has 64 divisors (see below), whose sum is σ = 1480826880. Its totient is φ = 138823200.

The previous prime is 564170833. The next prime is 564170851. The reversal of 564170838 is 838071465.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 564170838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564170833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23358 + ... + 40913.

It is an arithmetic number, because the mean of its divisors is an integer number (23137920).

Almost surely, 2^564170838 is an apocalyptic number.

564170838 is an abundant number, since it is smaller than the sum of its proper divisors (916656042).

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

564170838 is a wasteful number, since it uses less digits than its factorization.

564170838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64313.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 564170838 is about 23752.2806904937. The cubic root of 564170838 is about 826.2983354837.

The spelling of 564170838 in words is "five hundred sixty-four million, one hundred seventy thousand, eight hundred thirty-eight".