6665159 has 2 divisors, whose sum is σ = 6665160. Its totient is φ = 6665158.

The previous prime is 6665123. The next prime is 6665167. The reversal of 6665159 is 9515666.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6665159 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 (6665179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332579 + 3332580.

It is an arithmetic number, because the mean of its divisors is an integer number (3332580).

Almost surely, 2^6665159 is an apocalyptic number.

6665159 is a deficient number, since it is larger than the sum of its proper divisors (1).

6665159 is an equidigital number, since it uses as much as digits as its factorization.

6665159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 38.

The square root of 6665159 is about 2581.6969225686. The cubic root of 6665159 is about 188.1930170200.

The spelling of 6665159 in words is "six million, six hundred sixty-five thousand, one hundred fifty-nine".