564491000 has 32 divisors (see below), whose sum is σ = 1320911280. Its totient is φ = 225796000.

The previous prime is 564490973. The next prime is 564491017. The reversal of 564491000 is 194465.

564491000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 281246 + ... + 283245.

Almost surely, 2^564491000 is an apocalyptic number.

564491000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

564491000 is an abundant number, since it is smaller than the sum of its proper divisors (756420280).

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

564491000 is a wasteful number, since it uses less digits than its factorization.

564491000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564512 (or 564498 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 564491000 is about 23759.0193400317. The cubic root of 564491000 is about 826.4546116105.

The spelling of 564491000 in words is "five hundred sixty-four million, four hundred ninety-one thousand".