2668220 has 24 divisors (see below), whose sum is σ = 5670000. Its totient is φ = 1054592.

The previous prime is 2668219. The next prime is 2668229. The reversal of 2668220 is 228662.

It is a self number, because there is not a number n which added to its sum of digits gives 2668220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668229) 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, 1031 + ... + 2529.

It is an arithmetic number, because the mean of its divisors is an integer number (236250).

2^2668220 is an apocalyptic number.

2668220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2668220 is an abundant number, since it is smaller than the sum of its proper divisors (3001780).

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

2668220 is a wasteful number, since it uses less digits than its factorization.

2668220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 1595 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2668220 is about 1633.4687018734. The cubic root of 2668220 is about 138.6991751733.

The spelling of 2668220 in words is "two million, six hundred sixty-eight thousand, two hundred twenty".