564197988 has 12 divisors (see below), whose sum is σ = 1316462000. Its totient is φ = 188065992.

The previous prime is 564197983. The next prime is 564197993. The reversal of 564197988 is 889791465.

It is an interprime number because it is at equal distance from previous prime (564197983) and next prime (564197993).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (564197983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23508238 + ... + 23508261.

Almost surely, 2^564197988 is an apocalyptic number.

It is an amenable number.

564197988 is an abundant number, since it is smaller than the sum of its proper divisors (752264012).

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

564197988 is a wasteful number, since it uses less digits than its factorization.

564197988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47016506 (or 47016504 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 57.

The square root of 564197988 is about 23752.8522076823. The cubic root of 564197988 is about 826.3115901212.

The spelling of 564197988 in words is "five hundred sixty-four million, one hundred ninety-seven thousand, nine hundred eighty-eight".