630412668 has 18 divisors (see below), whose sum is σ = 1593543224. Its totient is φ = 210137544.

The previous prime is 630412661. The next prime is 630412711. The reversal of 630412668 is 866214036.

630412668 is a `hidden beast` number, since 630 + 4 + 12 + 6 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 17511463 = 630412668 / (6 + 3 + 0 + 4 + 1 + 2 + 6 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630412661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8755696 + ... + 8755767.

Almost surely, 2^630412668 is an apocalyptic number.

It is an amenable number.

630412668 is an abundant number, since it is smaller than the sum of its proper divisors (963130556).

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

630412668 is a wasteful number, since it uses less digits than its factorization.

630412668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17511473 (or 17511468 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 630412668 is about 25108.0199936196. The cubic root of 630412668 is about 857.4490243874.

The spelling of 630412668 in words is "six hundred thirty million, four hundred twelve thousand, six hundred sixty-eight".