6685628631 has 8 divisors (see below), whose sum is σ = 9724550784. Its totient is φ = 4051896120.

The previous prime is 6685628627. The next prime is 6685628657. The reversal of 6685628631 is 1368265866.

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

It is not a de Polignac number, because 6685628631 - 2² = 6685628627 is a prime.

It is a super-2 number, since 2×6685628631² = 89395260383293868322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685628611) 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, 101297371 + ... + 101297436.

It is an arithmetic number, because the mean of its divisors is an integer number (1215568848).

Almost surely, 2^6685628631 is an apocalyptic number.

6685628631 is a deficient number, since it is larger than the sum of its proper divisors (3038922153).

6685628631 is a wasteful number, since it uses less digits than its factorization.

6685628631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202594821.

The product of its digits is 2488320, while the sum is 51.

The square root of 6685628631 is about 81765.6934844926. The cubic root of 6685628631 is about 1883.8547578157.

The spelling of 6685628631 in words is "six billion, six hundred eighty-five million, six hundred twenty-eight thousand, six hundred thirty-one".