623723 has 2 divisors, whose sum is σ = 623724. Its totient is φ = 623722.

The previous prime is 623719. The next prime is 623729. The reversal of 623723 is 327326.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623723 - 2² = 623719 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (623729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311861 + 311862.

It is an arithmetic number, because the mean of its divisors is an integer number (311862).

2⁶²³⁷²³ is an apocalyptic number.

623723 is a deficient number, since it is larger than the sum of its proper divisors (1).

623723 is an equidigital number, since it uses as much as digits as its factorization.

623723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 23.

The square root of 623723 is about 789.7613563603. The cubic root of 623723 is about 85.4405272491.

The spelling of 623723 in words is "six hundred twenty-three thousand, seven hundred twenty-three".