6659901 has 12 divisors (see below), whose sum is σ = 9976512. Its totient is φ = 4439772.

The previous prime is 6659893. The next prime is 6659921. The reversal of 6659901 is 1099566.

6659901 is a `hidden beast` number, since 66 + 599 + 0 + 1 = 666.

It is not a de Polignac number, because 6659901 - 2³ = 6659893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6659921) 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, 13461 + ... + 13946.

It is an arithmetic number, because the mean of its divisors is an integer number (831376).

Almost surely, 2^6659901 is an apocalyptic number.

It is an amenable number.

6659901 is a deficient number, since it is larger than the sum of its proper divisors (3316611).

6659901 is an equidigital number, since it uses as much as digits as its factorization.

6659901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27422 (or 27410 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 6659901 is about 2580.6783991811. The cubic root of 6659901 is about 188.1435168655.

The spelling of 6659901 in words is "six million, six hundred fifty-nine thousand, nine hundred one".