566164621 has 8 divisors (see below), whose sum is σ = 617851584. Its totient is φ = 514513920.

The previous prime is 566164609. The next prime is 566164633. The reversal of 566164621 is 126461665.

It is an interprime number because it is at equal distance from previous prime (566164609) and next prime (566164633).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 566164621 - 2²⁵ = 532610189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561164621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31501 + ... + 46093.

It is an arithmetic number, because the mean of its divisors is an integer number (77231448).

Almost surely, 2^566164621 is an apocalyptic number.

It is an amenable number.

566164621 is a deficient number, since it is larger than the sum of its proper divisors (51686963).

566164621 is a wasteful number, since it uses less digits than its factorization.

566164621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18131.

The product of its digits is 51840, while the sum is 37.

The square root of 566164621 is about 23794.2140235814. The cubic root of 566164621 is about 827.2705721149.

The spelling of 566164621 in words is "five hundred sixty-six million, one hundred sixty-four thousand, six hundred twenty-one".