6631669 has 8 divisors (see below), whose sum is σ = 7302240. Its totient is φ = 5972400.

The previous prime is 6631663. The next prime is 6631679. The reversal of 6631669 is 9661366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6631669 - 2³ = 6631661 is a prime.

It is a super-2 number, since 2×6631669² = 87958067451122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6631661) 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, 1567 + ... + 3964.

It is an arithmetic number, because the mean of its divisors is an integer number (912780).

Almost surely, 2^6631669 is an apocalyptic number.

It is an amenable number.

6631669 is a deficient number, since it is larger than the sum of its proper divisors (670571).

6631669 is a wasteful number, since it uses less digits than its factorization.

6631669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5651.

The product of its digits is 34992, while the sum is 37.

The square root of 6631669 is about 2575.2027104677. The cubic root of 6631669 is about 187.8772871292.

It can be divided in two parts, 663 and 1669, that added together give a palindrome (2332).

The spelling of 6631669 in words is "six million, six hundred thirty-one thousand, six hundred sixty-nine".