5608166721 has 8 divisors (see below), whose sum is σ = 7478077920. Its totient is φ = 3738516672.

The previous prime is 5608166671. The next prime is 5608166731. The reversal of 5608166721 is 1276618065.

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

It is not a de Polignac number, because 5608166721 - 2⁹ = 5608166209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5608166731) 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, 7995 + ... + 106208.

It is an arithmetic number, because the mean of its divisors is an integer number (934759740).

Almost surely, 2^5608166721 is an apocalyptic number.

It is an amenable number.

5608166721 is a deficient number, since it is larger than the sum of its proper divisors (1869911199).

5608166721 is a wasteful number, since it uses less digits than its factorization.

5608166721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130575.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 5608166721 is about 74887.6940558327. The cubic root of 5608166721 is about 1776.6708299336.

The spelling of 5608166721 in words is "five billion, six hundred eight million, one hundred sixty-six thousand, seven hundred twenty-one".