623330557 has 2 divisors, whose sum is σ = 623330558. Its totient is φ = 623330556.

The previous prime is 623330531. The next prime is 623330563. The reversal of 623330557 is 755033326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319908996 + 303421561 = 17886^2 + 17419^2 .

It is a cyclic number.

It is not a de Polignac number, because 623330557 - 2¹⁵ = 623297789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623330507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311665278 + 311665279.

It is an arithmetic number, because the mean of its divisors is an integer number (311665279).

Almost surely, 2^623330557 is an apocalyptic number.

It is an amenable number.

623330557 is a deficient number, since it is larger than the sum of its proper divisors (1).

623330557 is an equidigital number, since it uses as much as digits as its factorization.

623330557 is an evil number, because the sum of its binary digits is even.

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

The square root of 623330557 is about 24966.5888138528. The cubic root of 623330557 is about 854.2260392323.

The spelling of 623330557 in words is "six hundred twenty-three million, three hundred thirty thousand, five hundred fifty-seven".