564746556 has 24 divisors (see below), whose sum is σ = 1437537024. Its totient is φ = 171135280.

The previous prime is 564746543. The next prime is 564746569. The reversal of 564746556 is 655647465.

It is an interprime number because it is at equal distance from previous prime (564746543) and next prime (564746569).

It is a super-2 number, since 2×564746556² = 637877345027722272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2139060 + ... + 2139323.

It is an arithmetic number, because the mean of its divisors is an integer number (59897376).

Almost surely, 2^564746556 is an apocalyptic number.

It is an amenable number.

564746556 is an abundant number, since it is smaller than the sum of its proper divisors (872790468).

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

564746556 is a wasteful number, since it uses less digits than its factorization.

564746556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278401 (or 4278399 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 48.

The square root of 564746556 is about 23764.3968154043. The cubic root of 564746556 is about 826.5793101268.

Subtracting 564746556 from its reverse (655647465), we obtain a palindrome (90900909).

The spelling of 564746556 in words is "five hundred sixty-four million, seven hundred forty-six thousand, five hundred fifty-six".