2166630 has 16 divisors (see below), whose sum is σ = 5199984. Its totient is φ = 577760.

The previous prime is 2166629. The next prime is 2166673. The reversal of 2166630 is 366612.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2166630.

It is a congruent number.

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, 36081 + ... + 36140.

It is an arithmetic number, because the mean of its divisors is an integer number (324999).

2^2166630 is an apocalyptic number.

2166630 is an abundant number, since it is smaller than the sum of its proper divisors (3033354).

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

2166630 is a wasteful number, since it uses less digits than its factorization.

2166630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72231.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2166630 is about 1471.9476892879. The cubic root of 2166630 is about 129.3982046641.

The spelling of 2166630 in words is "two million, one hundred sixty-six thousand, six hundred thirty".