6690959 has 4 divisors (see below), whose sum is σ = 7299240. Its totient is φ = 6082680.

The previous prime is 6690949. The next prime is 6690973. The reversal of 6690959 is 9590966.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6690959 - 2⁸ = 6690703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6690949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304124 + ... + 304145.

It is an arithmetic number, because the mean of its divisors is an integer number (1824810).

Almost surely, 2^6690959 is an apocalyptic number.

6690959 is a deficient number, since it is larger than the sum of its proper divisors (608281).

6690959 is a wasteful number, since it uses less digits than its factorization.

6690959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608280.

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 6690959 is about 2586.6888100427. The cubic root of 6690959 is about 188.4355282850.

The spelling of 6690959 in words is "six million, six hundred ninety thousand, nine hundred fifty-nine".