6331690 has 16 divisors (see below), whose sum is σ = 11511720. Its totient is φ = 2507200.

The previous prime is 6331679. The next prime is 6331691. The reversal of 6331690 is 961336.

It can be written as a sum of positive squares in 4 ways, for example, as 5900041 + 431649 = 2429^2 + 657^2 .

It is a super-2 number, since 2×6331690² = 80180596512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6331691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2125 + ... + 4144.

Almost surely, 2^6331690 is an apocalyptic number.

6331690 is a deficient number, since it is larger than the sum of its proper divisors (5180030).

6331690 is a wasteful number, since it uses less digits than its factorization.

6331690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6377.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 6331690 is about 2516.2849600155. The cubic root of 6331690 is about 185.0006330633. Note that the first 3 decimals are identical.

It can be divided in two parts, 6331 and 690, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 6331690 in words is "six million, three hundred thirty-one thousand, six hundred ninety".