5666617613 has 4 divisors (see below), whose sum is σ = 5709874368. Its totient is φ = 5623360860.

The previous prime is 5666617597. The next prime is 5666617637. The reversal of 5666617613 is 3167166665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5666617613 - 2⁴ = 5666617597 is a prime.

It is a super-2 number, since 2×5666617613² = 64221110343923635538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5666610613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21628181 + ... + 21628442.

It is an arithmetic number, because the mean of its divisors is an integer number (1427468592).

Almost surely, 2^5666617613 is an apocalyptic number.

It is an amenable number.

5666617613 is a deficient number, since it is larger than the sum of its proper divisors (43256755).

5666617613 is a wasteful number, since it uses less digits than its factorization.

5666617613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43256754.

The product of its digits is 816480, while the sum is 47.

The square root of 5666617613 is about 75276.9394502726. The cubic root of 5666617613 is about 1782.8219360333.

The spelling of 5666617613 in words is "five billion, six hundred sixty-six million, six hundred seventeen thousand, six hundred thirteen".