2163623 has 8 divisors (see below), whose sum is σ = 2697600. Its totient is φ = 1685880.

The previous prime is 2163613. The next prime is 2163653. The reversal of 2163623 is 3263612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2163623 is a prime.

It is a super-2 number, since 2×2163623² = 9362528972258, which contains 22 as substring.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 21 and 63623 contains 2163623 itself.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13973 + ... + 14126.

It is an arithmetic number, because the mean of its divisors is an integer number (337200).

2^2163623 is an apocalyptic number.

2163623 is a deficient number, since it is larger than the sum of its proper divisors (533977).

2163623 is a wasteful number, since it uses less digits than its factorization.

2163623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28117.

The product of its digits is 1296, while the sum is 23.

The square root of 2163623 is about 1470.9258988814. The cubic root of 2163623 is about 129.3383143356.

The spelling of 2163623 in words is "two million, one hundred sixty-three thousand, six hundred twenty-three".