5666624621 has 8 divisors (see below), whose sum is σ = 6699457920. Its totient is φ = 4689620208.

The previous prime is 5666624573. The next prime is 5666624627. The reversal of 5666624621 is 1264266665.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-5666624621 is a prime.

It is a super-2 number, since 2×5666624621² = 64221269190646787282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5666624627) 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, 13957001 + ... + 13957406.

It is an arithmetic number, because the mean of its divisors is an integer number (837432240).

Almost surely, 2^5666624621 is an apocalyptic number.

It is an amenable number.

5666624621 is a deficient number, since it is larger than the sum of its proper divisors (1032833299).

5666624621 is a wasteful number, since it uses less digits than its factorization.

5666624621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27914443.

The product of its digits is 622080, while the sum is 44.

The square root of 5666624621 is about 75276.9859983780. The cubic root of 5666624621 is about 1782.8226709814.

The spelling of 5666624621 in words is "five billion, six hundred sixty-six million, six hundred twenty-four thousand, six hundred twenty-one".