2199690 has 32 divisors (see below), whose sum is σ = 5866560. Its totient is φ = 586512.

The previous prime is 2199689. The next prime is 2199719. The reversal of 2199690 is 969912.

It is a super-2 number, since 2×2199690² = 9677272192200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3804 + ... + 4343.

It is an arithmetic number, because the mean of its divisors is an integer number (183330).

2^2199690 is an apocalyptic number.

2199690 is an abundant number, since it is smaller than the sum of its proper divisors (3666870).

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

2199690 is a wasteful number, since it uses less digits than its factorization.

2199690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8163 (or 8157 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 2199690 is about 1483.1351927589. The cubic root of 2199690 is about 130.0530355596.

The spelling of 2199690 in words is "two million, one hundred ninety-nine thousand, six hundred ninety".