2199663 has 16 divisors (see below), whose sum is σ = 3281760. Its totient is φ = 1456128.

The previous prime is 2199661. The next prime is 2199683. The reversal of 2199663 is 3669912.

It is not a de Polignac number, because 2199663 - 2¹ = 2199661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6781 + ... + 7097.

It is an arithmetic number, because the mean of its divisors is an integer number (205110).

2^2199663 is an apocalyptic number.

2199663 is a deficient number, since it is larger than the sum of its proper divisors (1082097).

2199663 is a wasteful number, since it uses less digits than its factorization.

2199663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 577 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 2199663 is about 1483.1260903915. The cubic root of 2199663 is about 130.0525034473.

The spelling of 2199663 in words is "two million, one hundred ninety-nine thousand, six hundred sixty-three".