6669838680 has 64 divisors (see below), whose sum is σ = 20081852640. Its totient is φ = 1772193792.

The previous prime is 6669838663. The next prime is 6669838691. The reversal of 6669838680 is 868389666.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67089 + ... + 133568.

Almost surely, 2^6669838680 is an apocalyptic number.

6669838680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6669838680 is an abundant number, since it is smaller than the sum of its proper divisors (13412013960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6669838680 is a wasteful number, since it uses less digits than its factorization.

6669838680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200948 (or 200944 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 60.

The square root of 6669838680 is about 81669.0803180739. The cubic root of 6669838680 is about 1882.3705083157.

The spelling of 6669838680 in words is "six billion, six hundred sixty-nine million, eight hundred thirty-eight thousand, six hundred eighty".