564997671 has 24 divisors (see below), whose sum is σ = 955447584. Its totient is φ = 314979840.

The previous prime is 564997663. The next prime is 564997679. The reversal of 564997671 is 176799465.

564997671 is a `hidden beast` number, since 564 + 9 + 9 + 7 + 6 + 71 = 666.

564997671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (564997663) and next prime (564997679).

It is not a de Polignac number, because 564997671 - 2³ = 564997663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564997679) 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, 106786 + ... + 111951.

It is an arithmetic number, because the mean of its divisors is an integer number (39810316).

Almost surely, 2^564997671 is an apocalyptic number.

564997671 is a deficient number, since it is larger than the sum of its proper divisors (390449913).

564997671 is a wasteful number, since it uses less digits than its factorization.

564997671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218791 (or 218788 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 564997671 is about 23769.6796570757. The cubic root of 564997671 is about 826.7018050194.

The spelling of 564997671 in words is "five hundred sixty-four million, nine hundred ninety-seven thousand, six hundred seventy-one".