6659957 has 2 divisors, whose sum is σ = 6659958. Its totient is φ = 6659956.

The previous prime is 6659941. The next prime is 6659977. The reversal of 6659957 is 7599566.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5044516 + 1615441 = 2246^2 + 1271^2 .

It is a cyclic number.

It is not a de Polignac number, because 6659957 - 2⁴ = 6659941 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6659977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3329978 + 3329979.

It is an arithmetic number, because the mean of its divisors is an integer number (3329979).

Almost surely, 2^6659957 is an apocalyptic number.

It is an amenable number.

6659957 is a deficient number, since it is larger than the sum of its proper divisors (1).

6659957 is an equidigital number, since it uses as much as digits as its factorization.

6659957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 510300, while the sum is 47.

The square root of 6659957 is about 2580.6892490186. The cubic root of 6659957 is about 188.1440442011.

The spelling of 6659957 in words is "six million, six hundred fifty-nine thousand, nine hundred fifty-seven".