923623 has 4 divisors (see below), whose sum is σ = 926440. Its totient is φ = 920808.

The previous prime is 923617. The next prime is 923641. The reversal of 923623 is 326329.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326329 = 59 ⋅5531.

It is a cyclic number.

It is not a de Polignac number, because 923623 - 2⁵ = 923591 is a prime.

It is a super-2 number, since 2×923623² = 1706158892258, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (923603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840 + ... + 1597.

It is an arithmetic number, because the mean of its divisors is an integer number (231610).

2⁹²³⁶²³ is an apocalyptic number.

923623 is a deficient number, since it is larger than the sum of its proper divisors (2817).

923623 is a wasteful number, since it uses less digits than its factorization.

923623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816.

The product of its digits is 1944, while the sum is 25.

The square root of 923623 is about 961.0530682538. The cubic root of 923623 is about 97.3863853005.

It can be divided in two parts, 9 and 23623, that added together give a palindrome (23632).

The spelling of 923623 in words is "nine hundred twenty-three thousand, six hundred twenty-three".