630738226 has 12 divisors (see below), whose sum is σ = 979859322. Its totient is φ = 304493504.

The previous prime is 630738217. The next prime is 630738247. The reversal of 630738226 is 622837036.

It can be written as a sum of positive squares in 3 ways, for example, as 625050001 + 5688225 = 25001^2 + 2385^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 185815 + ... + 189178.

Almost surely, 2^630738226 is an apocalyptic number.

630738226 is a deficient number, since it is larger than the sum of its proper divisors (349121096).

630738226 is a wasteful number, since it uses less digits than its factorization.

630738226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375053 (or 375024 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 630738226 is about 25114.5023044455. The cubic root of 630738226 is about 857.5966003931.

The spelling of 630738226 in words is "six hundred thirty million, seven hundred thirty-eight thousand, two hundred twenty-six".