623173 has 4 divisors (see below), whose sum is σ = 636480. Its totient is φ = 609868.

The previous prime is 623171. The next prime is 623209. The reversal of 623173 is 371326.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 623173 - 2¹ = 623171 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6583 + ... + 6676.

It is an arithmetic number, because the mean of its divisors is an integer number (159120).

2⁶²³¹⁷³ is an apocalyptic number.

It is an amenable number.

623173 is a deficient number, since it is larger than the sum of its proper divisors (13307).

623173 is a wasteful number, since it uses less digits than its factorization.

623173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13306.

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

The square root of 623173 is about 789.4130731119. The cubic root of 623173 is about 85.4154059963.

Adding to 623173 its reverse (371326), we get a palindrome (994499).

The spelling of 623173 in words is "six hundred twenty-three thousand, one hundred seventy-three".