564669 has 12 divisors (see below), whose sum is σ = 932256. Its totient is φ = 322632.

The previous prime is 564667. The next prime is 564671. The reversal of 564669 is 966465.

It is a happy number.

564669 is a `hidden beast` number, since 5 + 646 + 6 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (564667) and next prime (564671).

It is not a de Polignac number, because 564669 - 2¹ = 564667 is a prime.

It is a super-2 number, since 2×564669² = 637702159122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4419 + ... + 4544.

It is an arithmetic number, because the mean of its divisors is an integer number (77688).

2⁵⁶⁴⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

564669 is a deficient number, since it is larger than the sum of its proper divisors (367587).

564669 is a wasteful number, since it uses less digits than its factorization.

564669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8976 (or 8973 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 564669 is about 751.4446087371. Note that the first 3 decimals coincide. The cubic root of 564669 is about 82.6541470664.

The spelling of 564669 in words is "five hundred sixty-four thousand, six hundred sixty-nine".