6646354589 has 16 divisors (see below), whose sum is σ = 7862899200. Its totient is φ = 5496833664.

The previous prime is 6646354567. The next prime is 6646354607. The reversal of 6646354589 is 9854536466.

It is not a de Polignac number, because 6646354589 - 2²⁰ = 6645306013 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 (6646354529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326492 + ... + 346250.

It is an arithmetic number, because the mean of its divisors is an integer number (491431200).

Almost surely, 2^6646354589 is an apocalyptic number.

It is an amenable number.

6646354589 is a deficient number, since it is larger than the sum of its proper divisors (1216544611).

6646354589 is a wasteful number, since it uses less digits than its factorization.

6646354589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21452.

The product of its digits is 18662400, while the sum is 56.

The square root of 6646354589 is about 81525.1776385676. The cubic root of 6646354589 is about 1880.1586735133.

The spelling of 6646354589 in words is "six billion, six hundred forty-six million, three hundred fifty-four thousand, five hundred eighty-nine".