623304173 has 4 divisors (see below), whose sum is σ = 623571648. Its totient is φ = 623036700.

The previous prime is 623304137. The next prime is 623304193. The reversal of 623304173 is 371403326.

It is a happy number.

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 623304173 - 2¹⁴ = 623287789 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 (623304193) 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, 130211 + ... + 134912.

It is an arithmetic number, because the mean of its divisors is an integer number (155892912).

Almost surely, 2^623304173 is an apocalyptic number.

It is an amenable number.

623304173 is a deficient number, since it is larger than the sum of its proper divisors (267475).

623304173 is a wasteful number, since it uses less digits than its factorization.

623304173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267474.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 623304173 is about 24966.0604221010. The cubic root of 623304173 is about 854.2139866558.

Adding to 623304173 its reverse (371403326), we get a palindrome (994707499).

The spelling of 623304173 in words is "six hundred twenty-three million, three hundred four thousand, one hundred seventy-three".