6660959 has 2 divisors, whose sum is σ = 6660960. Its totient is φ = 6660958.

The previous prime is 6660949. The next prime is 6660967. The reversal of 6660959 is 9590666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6660959 - 2⁴ = 6660943 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 (6660919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3330479 + 3330480.

It is an arithmetic number, because the mean of its divisors is an integer number (3330480).

Almost surely, 2^6660959 is an apocalyptic number.

6660959 is a deficient number, since it is larger than the sum of its proper divisors (1).

6660959 is an equidigital number, since it uses as much as digits as its factorization.

6660959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 6660959 is about 2580.8833759006. The cubic root of 6660959 is about 188.1534792409.

The spelling of 6660959 in words is "six million, six hundred sixty thousand, nine hundred fifty-nine".