630516839 has 2 divisors, whose sum is σ = 630516840. Its totient is φ = 630516838.

The previous prime is 630516787. The next prime is 630516857. The reversal of 630516839 is 938615036.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 630516839 - 2⁸ = 630516583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 630516796 and 630516805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630516739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315258419 + 315258420.

It is an arithmetic number, because the mean of its divisors is an integer number (315258420).

Almost surely, 2^630516839 is an apocalyptic number.

630516839 is a deficient number, since it is larger than the sum of its proper divisors (1).

630516839 is an equidigital number, since it uses as much as digits as its factorization.

630516839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 630516839 is about 25110.0943646176. The cubic root of 630516839 is about 857.4962508088.

The spelling of 630516839 in words is "six hundred thirty million, five hundred sixteen thousand, eight hundred thirty-nine".