6664170 has 64 divisors (see below), whose sum is σ = 17262720. Its totient is φ = 1640448.

The previous prime is 6664169. The next prime is 6664199. The reversal of 6664170 is 714666.

It is a super-2 number, since 2×6664170² = 88822323577800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37141 + ... + 37319.

It is an arithmetic number, because the mean of its divisors is an integer number (269730).

Almost surely, 2^6664170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6664170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8631360).

6664170 is an abundant number, since it is smaller than the sum of its proper divisors (10598550).

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

6664170 is a wasteful number, since it uses less digits than its factorization.

6664170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 6664170 is about 2581.5053747765. The cubic root of 6664170 is about 188.1837083098.

The spelling of 6664170 in words is "six million, six hundred sixty-four thousand, one hundred seventy".