623899373 has 2 divisors, whose sum is σ = 623899374. Its totient is φ = 623899372.

The previous prime is 623899351. The next prime is 623899379. The reversal of 623899373 is 373998326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 512660164 + 111239209 = 22642^2 + 10547^2 .

It is a cyclic number.

It is not a de Polignac number, because 623899373 - 2⁸ = 623899117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623899379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311949686 + 311949687.

It is an arithmetic number, because the mean of its divisors is an integer number (311949687).

Almost surely, 2^623899373 is an apocalyptic number.

It is an amenable number.

623899373 is a deficient number, since it is larger than the sum of its proper divisors (1).

623899373 is an equidigital number, since it uses as much as digits as its factorization.

623899373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 50.

The square root of 623899373 is about 24977.9777604193. The cubic root of 623899373 is about 854.4857995940.

The spelling of 623899373 in words is "six hundred twenty-three million, eight hundred ninety-nine thousand, three hundred seventy-three".