630608459 has 24 divisors (see below), whose sum is σ = 706128192. Its totient is φ = 562554720.

The previous prime is 630608339. The next prime is 630608483. The reversal of 630608459 is 954806036.

It is not a de Polignac number, because 630608459 - 2²⁰ = 629559883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630608059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 777164 + ... + 777974.

It is an arithmetic number, because the mean of its divisors is an integer number (29422008).

Almost surely, 2^630608459 is an apocalyptic number.

630608459 is a deficient number, since it is larger than the sum of its proper divisors (75519733).

630608459 is a wasteful number, since it uses less digits than its factorization.

630608459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 630608459 is about 25111.9186642518. The cubic root of 630608459 is about 857.5377828751.

The spelling of 630608459 in words is "six hundred thirty million, six hundred eight thousand, four hundred fifty-nine".