6659870 has 32 divisors (see below), whose sum is σ = 13867200. Its totient is φ = 2255616.

The previous prime is 6659843. The next prime is 6659893. The reversal of 6659870 is 789566.

It is a happy number.

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, 5696 + ... + 6764.

It is an arithmetic number, because the mean of its divisors is an integer number (433350).

Almost surely, 2^6659870 is an apocalyptic number.

6659870 is an abundant number, since it is smaller than the sum of its proper divisors (7207330).

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

6659870 is a wasteful number, since it uses less digits than its factorization.

6659870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 6659870 is about 2580.6723930015. The cubic root of 6659870 is about 188.1432249464.

The spelling of 6659870 in words is "six million, six hundred fifty-nine thousand, eight hundred seventy".