6616589 has 4 divisors (see below), whose sum is σ = 7561824. Its totient is φ = 5671356.

The previous prime is 6616583. The next prime is 6616591. The reversal of 6616589 is 9856166.

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 a de Polignac number, because none of the positive numbers 2^k-6616589 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 (6616583) 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, 472607 + ... + 472620.

It is an arithmetic number, because the mean of its divisors is an integer number (1890456).

Almost surely, 2^6616589 is an apocalyptic number.

It is an amenable number.

6616589 is a deficient number, since it is larger than the sum of its proper divisors (945235).

6616589 is an equidigital number, since it uses as much as digits as its factorization.

6616589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945234.

The product of its digits is 77760, while the sum is 41.

The square root of 6616589 is about 2572.2731192469. The cubic root of 6616589 is about 187.7347719893.

The spelling of 6616589 in words is "six million, six hundred sixteen thousand, five hundred eighty-nine".