6658508889 has 12 divisors (see below), whose sum is σ = 9623778736. Its totient is φ = 4436267832.

The previous prime is 6658508887. The next prime is 6658508891. The reversal of 6658508889 is 9888058566.

It is an interprime number because it is at equal distance from previous prime (6658508887) and next prime (6658508891).

It is not a de Polignac number, because 6658508889 - 2¹ = 6658508887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6658508887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212719 + ... + 242004.

Almost surely, 2^6658508889 is an apocalyptic number.

It is an amenable number.

6658508889 is a deficient number, since it is larger than the sum of its proper divisors (2965269847).

6658508889 is a wasteful number, since it uses less digits than its factorization.

6658508889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456356 (or 456353 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 63.

The square root of 6658508889 is about 81599.6868192519. The cubic root of 6658508889 is about 1881.3040681524.

The spelling of 6658508889 in words is "six billion, six hundred fifty-eight million, five hundred eight thousand, eight hundred eighty-nine".