6213666 has 16 divisors (see below), whose sum is σ = 12585600. Its totient is φ = 2044848.

The previous prime is 6213659. The next prime is 6213679. The reversal of 6213666 is 6663126.

It is a nude number because it is divisible by every one of its digits.

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, 6081 + ... + 7028.

It is an arithmetic number, because the mean of its divisors is an integer number (786600).

Almost surely, 2^6213666 is an apocalyptic number.

6213666 is an abundant number, since it is smaller than the sum of its proper divisors (6371934).

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

6213666 is a wasteful number, since it uses less digits than its factorization.

6213666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13193.

The product of its digits is 7776, while the sum is 30.

The square root of 6213666 is about 2492.7226079129. The cubic root of 6213666 is about 183.8439327223.

The spelling of 6213666 in words is "six million, two hundred thirteen thousand, six hundred sixty-six".