630318986 has 16 divisors (see below), whose sum is σ = 1031896800. Its totient is φ = 286379280.

The previous prime is 630318961. The next prime is 630318989. The reversal of 630318986 is 689813036.

630318986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×630318986² = 794604048224136392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (630318989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57365 + ... + 67463.

It is an arithmetic number, because the mean of its divisors is an integer number (64493550).

Almost surely, 2^630318986 is an apocalyptic number.

630318986 is a deficient number, since it is larger than the sum of its proper divisors (401577814).

630318986 is a wasteful number, since it uses less digits than its factorization.

630318986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12949.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 630318986 is about 25106.1543451003. The cubic root of 630318986 is about 857.4065487611.

The spelling of 630318986 in words is "six hundred thirty million, three hundred eighteen thousand, nine hundred eighty-six".