6659498994 has 16 divisors (see below), whose sum is σ = 13339784160. Its totient is φ = 2216368640.

The previous prime is 6659498939. The next prime is 6659498999. The reversal of 6659498994 is 4998949566.

It is a super-3 number, since 3×6659498994³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6659498999) 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, 861924 + ... + 869615.

It is an arithmetic number, because the mean of its divisors is an integer number (833736510).

Almost surely, 2^6659498994 is an apocalyptic number.

6659498994 is an abundant number, since it is smaller than the sum of its proper divisors (6680285166).

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

6659498994 is a wasteful number, since it uses less digits than its factorization.

6659498994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732185.

The product of its digits is 151165440, while the sum is 69.

The square root of 6659498994 is about 81605.7534368748. The cubic root of 6659498994 is about 1881.3973120642.

The spelling of 6659498994 in words is "six billion, six hundred fifty-nine million, four hundred ninety-eight thousand, nine hundred ninety-four".