623673959 has 2 divisors, whose sum is σ = 623673960. Its totient is φ = 623673958.

The previous prime is 623673907. The next prime is 623673983. The reversal of 623673959 is 959376326.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 623673959 - 2²⁴ = 606896743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623673559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311836979 + 311836980.

It is an arithmetic number, because the mean of its divisors is an integer number (311836980).

Almost surely, 2^623673959 is an apocalyptic number.

623673959 is a deficient number, since it is larger than the sum of its proper divisors (1).

623673959 is an equidigital number, since it uses as much as digits as its factorization.

623673959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 50.

The square root of 623673959 is about 24973.4650979795. The cubic root of 623673959 is about 854.3828790099.

The spelling of 623673959 in words is "six hundred twenty-three million, six hundred seventy-three thousand, nine hundred fifty-nine".