6690339 has 12 divisors (see below), whose sum is σ = 9900072. Its totient is φ = 4351200.

The previous prime is 6690331. The next prime is 6690347. The reversal of 6690339 is 9330966.

It is an interprime number because it is at equal distance from previous prime (6690331) and next prime (6690347).

It is not a de Polignac number, because 6690339 - 2³ = 6690331 is a prime.

6690339 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6690331) 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, 8697 + ... + 9434.

It is an arithmetic number, because the mean of its divisors is an integer number (825006).

Almost surely, 2^6690339 is an apocalyptic number.

6690339 is a deficient number, since it is larger than the sum of its proper divisors (3209733).

6690339 is a wasteful number, since it uses less digits than its factorization.

6690339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18178 (or 18175 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 6690339 is about 2586.5689629314. The cubic root of 6690339 is about 188.4297078121.

The spelling of 6690339 in words is "six million, six hundred ninety thousand, three hundred thirty-nine".