5608891 has 4 divisors (see below), whose sum is σ = 5676552. Its totient is φ = 5541232.

The previous prime is 5608879. The next prime is 5608901. The reversal of 5608891 is 1988065.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5608891 - 2⁵ = 5608859 is a prime.

It is a Duffinian number.

5608891 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5608891.

It is not an unprimeable number, because it can be changed into a prime (5608871) 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, 33706 + ... + 33871.

It is an arithmetic number, because the mean of its divisors is an integer number (1419138).

Almost surely, 2^5608891 is an apocalyptic number.

5608891 is a deficient number, since it is larger than the sum of its proper divisors (67661).

5608891 is an equidigital number, since it uses as much as digits as its factorization.

5608891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67660.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 5608891 is about 2368.3097348109. The cubic root of 5608891 is about 177.6747310659.

The spelling of 5608891 in words is "five million, six hundred eight thousand, eight hundred ninety-one".