564055890 has 64 divisors (see below), whose sum is σ = 1370908800. Its totient is φ = 148520960.

The previous prime is 564055859. The next prime is 564055927. The reversal of 564055890 is 98550465.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1148545 + ... + 1149035.

It is an arithmetic number, because the mean of its divisors is an integer number (21420450).

Almost surely, 2^564055890 is an apocalyptic number.

564055890 is an abundant number, since it is smaller than the sum of its proper divisors (806852910).

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

564055890 is a wasteful number, since it uses less digits than its factorization.

564055890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907.

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 564055890 is about 23749.8608416976. The cubic root of 564055890 is about 826.2422131261.

The spelling of 564055890 in words is "five hundred sixty-four million, fifty-five thousand, eight hundred ninety".