173623 has 4 divisors (see below), whose sum is σ = 179640. Its totient is φ = 167608.

The previous prime is 173617. The next prime is 173629. The reversal of 173623 is 326371.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326371 = 389 ⋅839.

It is an interprime number because it is at equal distance from previous prime (173617) and next prime (173629).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173623 is a prime.

It is a super-2 number, since 2×173623² = 60289892258, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 173594 and 173603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173629) 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, 2965 + ... + 3022.

It is an arithmetic number, because the mean of its divisors is an integer number (44910).

2¹⁷³⁶²³ is an apocalyptic number.

173623 is a deficient number, since it is larger than the sum of its proper divisors (6017).

173623 is an equidigital number, since it uses as much as digits as its factorization.

173623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6016.

The product of its digits is 756, while the sum is 22.

The square root of 173623 is about 416.6809330891. The cubic root of 173623 is about 55.7873525547.

Adding to 173623 its reverse (326371), we get a palindrome (499994).

The spelling of 173623 in words is "one hundred seventy-three thousand, six hundred twenty-three".