623116279 has 2 divisors, whose sum is σ = 623116280. Its totient is φ = 623116278.

The previous prime is 623116261. The next prime is 623116309. The reversal of 623116279 is 972611326.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623116279 - 2¹¹ = 623114231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623117279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311558139 + 311558140.

It is an arithmetic number, because the mean of its divisors is an integer number (311558140).

Almost surely, 2^623116279 is an apocalyptic number.

623116279 is a deficient number, since it is larger than the sum of its proper divisors (1).

623116279 is an equidigital number, since it uses as much as digits as its factorization.

623116279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 623116279 is about 24962.2971499019. The cubic root of 623116279 is about 854.1281442372.

The spelling of 623116279 in words is "six hundred twenty-three million, one hundred sixteen thousand, two hundred seventy-nine".