2166270 has 32 divisors (see below), whose sum is σ = 5242752. Its totient is φ = 572832.

The previous prime is 2166251. The next prime is 2166289. The reversal of 2166270 is 726612.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2166251) and next prime (2166289).

It is a self number, because there is not a number n which added to its sum of digits gives 2166270.

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, 4669 + ... + 5111.

It is an arithmetic number, because the mean of its divisors is an integer number (163836).

2^2166270 is an apocalyptic number.

2166270 is an abundant number, since it is smaller than the sum of its proper divisors (3076482).

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

2166270 is a wasteful number, since it uses less digits than its factorization.

2166270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 2166270 is about 1471.8253972534. The cubic root of 2166270 is about 129.3910374761.

The spelling of 2166270 in words is "two million, one hundred sixty-six thousand, two hundred seventy".