2668218 has 64 divisors (see below), whose sum is σ = 6697728. Its totient is φ = 691200.

The previous prime is 2668217. The next prime is 2668219. The reversal of 2668218 is 8128662.

It is an interprime number because it is at equal distance from previous prime (2668217) and next prime (2668219).

It is not an unprimeable number, because it can be changed into a prime (2668213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26368 + ... + 26468.

It is an arithmetic number, because the mean of its divisors is an integer number (104652).

2^2668218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2668218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3348864).

2668218 is an abundant number, since it is smaller than the sum of its proper divisors (4029510).

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

2668218 is a wasteful number, since it uses less digits than its factorization.

2668218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167.

The product of its digits is 9216, while the sum is 33.

The square root of 2668218 is about 1633.4680896791. The cubic root of 2668218 is about 138.6991405186.

The spelling of 2668218 in words is "two million, six hundred sixty-eight thousand, two hundred eighteen".