623307 has 4 divisors (see below), whose sum is σ = 831080. Its totient is φ = 415536.

The previous prime is 623303. The next prime is 623321. The reversal of 623307 is 703326.

623307 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 623307 - 2² = 623303 is a prime.

It is a D-number.

It is a Duffinian number.

623307 is strictly pandigital in base 7.

623307 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 623307.

It is not an unprimeable number, because it can be changed into a prime (623303) 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, 103882 + ... + 103887.

It is an arithmetic number, because the mean of its divisors is an integer number (207770).

2⁶²³³⁰⁷ is an apocalyptic number.

623307 is a deficient number, since it is larger than the sum of its proper divisors (207773).

623307 is a wasteful number, since it uses less digits than its factorization.

623307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207772.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 623307 is about 789.4979417326. The cubic root of 623307 is about 85.4215278085.

Subtracting from 623307 its sum of digits (21), we obtain a triangular number (623286 = T₁₁₁₆).

The spelling of 623307 in words is "six hundred twenty-three thousand, three hundred seven".