630136427 has 2 divisors, whose sum is σ = 630136428. Its totient is φ = 630136426.

The previous prime is 630136393. The next prime is 630136453. The reversal of 630136427 is 724631036.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 630136427 - 2⁶ = 630136363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 630136393 and 630136402.

It is not a weakly prime, because it can be changed into another prime (630136327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315068213 + 315068214.

It is an arithmetic number, because the mean of its divisors is an integer number (315068214).

Almost surely, 2^630136427 is an apocalyptic number.

630136427 is a deficient number, since it is larger than the sum of its proper divisors (1).

630136427 is an equidigital number, since it uses as much as digits as its factorization.

630136427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 630136427 is about 25102.5183398001. The cubic root of 630136427 is about 857.3237640126.

The spelling of 630136427 in words is "six hundred thirty million, one hundred thirty-six thousand, four hundred twenty-seven".