3156666 has 16 divisors (see below), whose sum is σ = 6400704. Its totient is φ = 1037664.

The previous prime is 3156653. The next prime is 3156667. The reversal of 3156666 is 6666513.

It is not an unprimeable number, because it can be changed into a prime (3156667) 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, 3166 + ... + 4041.

It is an arithmetic number, because the mean of its divisors is an integer number (400044).

Almost surely, 2^3156666 is an apocalyptic number.

3156666 is an abundant number, since it is smaller than the sum of its proper divisors (3244038).

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

3156666 is a wasteful number, since it uses less digits than its factorization.

3156666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7285.

The product of its digits is 19440, while the sum is 33.

The square root of 3156666 is about 1776.7008752179. The cubic root of 3156666 is about 146.6930519564.

The spelling of 3156666 in words is "three million, one hundred fifty-six thousand, six hundred sixty-six".