6660870 has 16 divisors (see below), whose sum is σ = 15986160. Its totient is φ = 1776224.

The previous prime is 6660859. The next prime is 6660911. The reversal of 6660870 is 780666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110985 + ... + 111044.

It is an arithmetic number, because the mean of its divisors is an integer number (999135).

Almost surely, 2^6660870 is an apocalyptic number.

6660870 is an abundant number, since it is smaller than the sum of its proper divisors (9325290).

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

6660870 is a wasteful number, since it uses less digits than its factorization.

6660870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222039.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 6660870 is about 2580.8661336846. The cubic root of 6660870 is about 188.1526412367.

The spelling of 6660870 in words is "six million, six hundred sixty thousand, eight hundred seventy".