6631690 has 32 divisors (see below), whose sum is σ = 12983040. Its totient is φ = 2424384.

The previous prime is 6631679. The next prime is 6631693. The reversal of 6631690 is 961366.

It is a super-2 number, since 2×6631690² = 87958624512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6631693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17887 + ... + 18253.

It is an arithmetic number, because the mean of its divisors is an integer number (405720).

Almost surely, 2^6631690 is an apocalyptic number.

6631690 is a deficient number, since it is larger than the sum of its proper divisors (6351350).

6631690 is a wasteful number, since it uses less digits than its factorization.

6631690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 6631690 is about 2575.2067878134. The cubic root of 6631690 is about 187.8774854412.

The spelling of 6631690 in words is "six million, six hundred thirty-one thousand, six hundred ninety".