2190668 has 12 divisors (see below), whose sum is σ = 3850392. Its totient is φ = 1090560.

The previous prime is 2190653. The next prime is 2190679. The reversal of 2190668 is 8660912.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (320866).

2^2190668 is an apocalyptic number.

It is an amenable number.

2190668 is a deficient number, since it is larger than the sum of its proper divisors (1659724).

2190668 is a wasteful number, since it uses less digits than its factorization.

2190668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2390 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2190668 is about 1480.0905377713. The cubic root of 2190668 is about 129.8749883050.

The spelling of 2190668 in words is "two million, one hundred ninety thousand, six hundred sixty-eight".