564681840 has 40 divisors (see below), whose sum is σ = 1750514448. Its totient is φ = 150581760.

The previous prime is 564681797. The next prime is 564681851. The reversal of 564681840 is 48186465.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 564681792 and 564681801.

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, 1176181 + ... + 1176660.

Almost surely, 2^564681840 is an apocalyptic number.

It is an amenable number.

564681840 is an abundant number, since it is smaller than the sum of its proper divisors (1185832608).

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

564681840 is a wasteful number, since it uses less digits than its factorization.

564681840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352857 (or 2352851 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 564681840 is about 23763.0351596760. The cubic root of 564681840 is about 826.5477355208.

The spelling of 564681840 in words is "five hundred sixty-four million, six hundred eighty-one thousand, eight hundred forty".