3318666 has 32 divisors (see below), whose sum is σ = 7219968. Its totient is φ = 1010880.

The previous prime is 3318631. The next prime is 3318671. The reversal of 3318666 is 6668133.

It is a super-2 number, since 2×3318666² = 22027088039112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12111 + ... + 12381.

It is an arithmetic number, because the mean of its divisors is an integer number (225624).

Almost surely, 2^3318666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3318666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3609984).

3318666 is an abundant number, since it is smaller than the sum of its proper divisors (3901302).

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

3318666 is a wasteful number, since it uses less digits than its factorization.

3318666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446.

The product of its digits is 15552, while the sum is 33.

The square root of 3318666 is about 1821.7206152426. The cubic root of 3318666 is about 149.1607352107.

The spelling of 3318666 in words is "three million, three hundred eighteen thousand, six hundred sixty-six".