6656549982 has 16 divisors (see below), whose sum is σ = 13320571392. Its totient is φ = 2217604760.

The previous prime is 6656549959. The next prime is 6656549983. The reversal of 6656549982 is 2899456566.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656549983) 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, 299694 + ... + 321137.

It is an arithmetic number, because the mean of its divisors is an integer number (832535712).

Almost surely, 2^6656549982 is an apocalyptic number.

6656549982 is an abundant number, since it is smaller than the sum of its proper divisors (6664021410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6656549982 is a wasteful number, since it uses less digits than its factorization.

6656549982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622623.

The product of its digits is 27993600, while the sum is 60.

The square root of 6656549982 is about 81587.6827836163. The cubic root of 6656549982 is about 1881.1195593167.

The spelling of 6656549982 in words is "six billion, six hundred fifty-six million, five hundred forty-nine thousand, nine hundred eighty-two".