630468986 has 20 divisors (see below), whose sum is σ = 1103263482. Its totient is φ = 270198936.

The previous prime is 630468929. The next prime is 630468989. The reversal of 630468986 is 689864036.

It can be written as a sum of positive squares in only one way, i.e., 421521961 + 208947025 = 20531^2 + 14455^2 .

It is a super-2 number, since 2×630468986² = 794982284615736392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (630468989) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 60845 + ... + 70448.

Almost surely, 2^630468986 is an apocalyptic number.

630468986 is a deficient number, since it is larger than the sum of its proper divisors (472794496).

630468986 is an equidigital number, since it uses as much as digits as its factorization.

630468986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131323 (or 131302 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 50.

The square root of 630468986 is about 25109.1414827349. The cubic root of 630468986 is about 857.4745570682.

The spelling of 630468986 in words is "six hundred thirty million, four hundred sixty-eight thousand, nine hundred eighty-six".