2196663 has 16 divisors (see below), whose sum is σ = 3463680. Its totient is φ = 1211616.

The previous prime is 2196659. The next prime is 2196673. The reversal of 2196663 is 3666912.

It is a happy number.

It is not a de Polignac number, because 2196663 - 2² = 2196659 is a prime.

2196663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196613) 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, 1195 + ... + 2412.

It is an arithmetic number, because the mean of its divisors is an integer number (216480).

2^2196663 is an apocalyptic number.

2196663 is a deficient number, since it is larger than the sum of its proper divisors (1267017).

2196663 is a wasteful number, since it uses less digits than its factorization.

2196663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646.

The product of its digits is 11664, while the sum is 33.

The square root of 2196663 is about 1482.1143680567. The cubic root of 2196663 is about 129.9933527173.

The spelling of 2196663 in words is "two million, one hundred ninety-six thousand, six hundred sixty-three".