623393 has 2 divisors, whose sum is σ = 623394. Its totient is φ = 623392.

The previous prime is 623387. The next prime is 623401. The reversal of 623393 is 393326.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528529 + 94864 = 727^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 623393 - 2¹⁶ = 557857 is a prime.

It is a Chen prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (623303) 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 as a sum of consecutive naturals, namely, 311696 + 311697.

It is an arithmetic number, because the mean of its divisors is an integer number (311697).

2⁶²³³⁹³ is an apocalyptic number.

It is an amenable number.

623393 is a deficient number, since it is larger than the sum of its proper divisors (1).

623393 is an equidigital number, since it uses as much as digits as its factorization.

623393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 26.

The square root of 623393 is about 789.5524048472. The cubic root of 623393 is about 85.4254562705.

The spelling of 623393 in words is "six hundred twenty-three thousand, three hundred ninety-three".