564091836 has 288 divisors, whose sum is σ = 1830420480. Its totient is φ = 131725440.

The previous prime is 564091823. The next prime is 564091867. The reversal of 564091836 is 638190465.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4441605 + ... + 4441731.

Almost surely, 2^564091836 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 564091836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915210240).

564091836 is an abundant number, since it is smaller than the sum of its proper divisors (1266328644).

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

564091836 is a wasteful number, since it uses less digits than its factorization.

564091836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 564091836 is about 23750.6175919701. The cubic root of 564091836 is about 826.2597642661.

The spelling of 564091836 in words is "five hundred sixty-four million, ninety-one thousand, eight hundred thirty-six".