623503357 has 2 divisors, whose sum is σ = 623503358. Its totient is φ = 623503356.

The previous prime is 623503301. The next prime is 623503369. The reversal of 623503357 is 753305326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 598242681 + 25260676 = 24459^2 + 5026^2 .

It is a cyclic number.

It is not a de Polignac number, because 623503357 - 2⁷ = 623503229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623503057) 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, 311751678 + 311751679.

It is an arithmetic number, because the mean of its divisors is an integer number (311751679).

Almost surely, 2^623503357 is an apocalyptic number.

It is an amenable number.

623503357 is a deficient number, since it is larger than the sum of its proper divisors (1).

623503357 is an equidigital number, since it uses as much as digits as its factorization.

623503357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 34.

The square root of 623503357 is about 24970.0491989904. The cubic root of 623503357 is about 854.3049682585.

The spelling of 623503357 in words is "six hundred twenty-three million, five hundred three thousand, three hundred fifty-seven".