2193623 has 4 divisors (see below), whose sum is σ = 2247168. Its totient is φ = 2140080.

The previous prime is 2193601. The next prime is 2193637. The reversal of 2193623 is 3263912.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2193623 - 2¹⁴ = 2177239 is a prime.

It is a super-2 number, since 2×2193623² = 9623963732258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2193592 and 2193601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2193643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26711 + ... + 26792.

It is an arithmetic number, because the mean of its divisors is an integer number (561792).

2^2193623 is an apocalyptic number.

2193623 is a deficient number, since it is larger than the sum of its proper divisors (53545).

2193623 is an equidigital number, since it uses as much as digits as its factorization.

2193623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53544.

The product of its digits is 1944, while the sum is 26.

The square root of 2193623 is about 1481.0884511061. The cubic root of 2193623 is about 129.9333583484.

The spelling of 2193623 in words is "two million, one hundred ninety-three thousand, six hundred twenty-three".