6669870 has 16 divisors (see below), whose sum is σ = 16007760. Its totient is φ = 1778624.

The previous prime is 6669869. The next prime is 6669877. The reversal of 6669870 is 789666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6669877) 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, 111135 + ... + 111194.

It is an arithmetic number, because the mean of its divisors is an integer number (1000485).

Almost surely, 2^6669870 is an apocalyptic number.

6669870 is an abundant number, since it is smaller than the sum of its proper divisors (9337890).

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

6669870 is a wasteful number, since it uses less digits than its factorization.

6669870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222339.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 6669870 is about 2582.6091458058. The cubic root of 6669870 is about 188.2373454701.

The spelling of 6669870 in words is "six million, six hundred sixty-nine thousand, eight hundred seventy".