564488397 has 24 divisors (see below), whose sum is σ = 894979488. Its totient is φ = 340005600.

The previous prime is 564488387. The next prime is 564488413. The reversal of 564488397 is 793884465.

564488397 is a `hidden beast` number, since 564 + 48 + 8 + 39 + 7 = 666.

It is not a de Polignac number, because 564488397 - 2⁴ = 564488381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564488387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1354 + ... + 33627.

It is an arithmetic number, because the mean of its divisors is an integer number (37290812).

Almost surely, 2^564488397 is an apocalyptic number.

It is an amenable number.

564488397 is a deficient number, since it is larger than the sum of its proper divisors (330491091).

564488397 is a wasteful number, since it uses less digits than its factorization.

564488397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35161 (or 35158 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 564488397 is about 23758.9645607716. The cubic root of 564488397 is about 826.4533412834.

The spelling of 564488397 in words is "five hundred sixty-four million, four hundred eighty-eight thousand, three hundred ninety-seven".