630859290 has 32 divisors (see below), whose sum is σ = 1603126080. Its totient is φ = 158333184.

The previous prime is 630859283. The next prime is 630859303. The reversal of 630859290 is 92958036.

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 15 ways as a sum of consecutive naturals, for example, 617980 + ... + 618999.

It is an arithmetic number, because the mean of its divisors is an integer number (50097690).

Almost surely, 2^630859290 is an apocalyptic number.

630859290 is an abundant number, since it is smaller than the sum of its proper divisors (972266790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630859290 is a wasteful number, since it uses less digits than its factorization.

630859290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237006.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 630859290 is about 25116.9124296757. The cubic root of 630859290 is about 857.6514659610.

The spelling of 630859290 in words is "six hundred thirty million, eight hundred fifty-nine thousand, two hundred ninety".