623458117 has 2 divisors, whose sum is σ = 623458118. Its totient is φ = 623458116.

The previous prime is 623458063. The next prime is 623458123. The reversal of 623458117 is 711854326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 558187876 + 65270241 = 23626^2 + 8079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623458117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623458417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311729058 + 311729059.

It is an arithmetic number, because the mean of its divisors is an integer number (311729059).

Almost surely, 2^623458117 is an apocalyptic number.

It is an amenable number.

623458117 is a deficient number, since it is larger than the sum of its proper divisors (1).

623458117 is an equidigital number, since it uses as much as digits as its factorization.

623458117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 623458117 is about 24969.1432972779. The cubic root of 623458117 is about 854.2843056103.

The spelling of 623458117 in words is "six hundred twenty-three million, four hundred fifty-eight thousand, one hundred seventeen".