564979856 has 80 divisors (see below), whose sum is σ = 1322058240. Its totient is φ = 228748800.

The previous prime is 564979837. The next prime is 564979859. The reversal of 564979856 is 658979465.

It is a junction number, because it is equal to n+sod(n) for n = 564979795 and 564979804.

It is not an unprimeable number, because it can be changed into a prime (564979859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150806 + ... + 154506.

It is an arithmetic number, because the mean of its divisors is an integer number (16525728).

Almost surely, 2^564979856 is an apocalyptic number.

564979856 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 564979856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661029120).

564979856 is an abundant number, since it is smaller than the sum of its proper divisors (757078384).

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

564979856 is a wasteful number, since it uses less digits than its factorization.

564979856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792 (or 3786 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 59.

The square root of 564979856 is about 23769.3049120078. The cubic root of 564979856 is about 826.6931159881.

The spelling of 564979856 in words is "five hundred sixty-four million, nine hundred seventy-nine thousand, eight hundred fifty-six".