509630623 has 2 divisors, whose sum is σ = 509630624. Its totient is φ = 509630622.

The previous prime is 509630603. The next prime is 509630629. The reversal of 509630623 is 326036905.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509630623 - 2⁵ = 509630591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509630629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254815311 + 254815312.

It is an arithmetic number, because the mean of its divisors is an integer number (254815312).

Almost surely, 2^509630623 is an apocalyptic number.

509630623 is a deficient number, since it is larger than the sum of its proper divisors (1).

509630623 is an equidigital number, since it uses as much as digits as its factorization.

509630623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 509630623 is about 22574.9999557032. Note that the first 4 decimals coincide. The cubic root of 509630623 is about 798.7640409691.

The spelling of 509630623 in words is "five hundred nine million, six hundred thirty thousand, six hundred twenty-three".