630771628 has 12 divisors (see below), whose sum is σ = 1104056632. Its totient is φ = 315326880.

The previous prime is 630771623. The next prime is 630771649. The reversal of 630771628 is 826177036.

It is not an unprimeable number, because it can be changed into a prime (630771623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16888 + ... + 39328.

Almost surely, 2^630771628 is an apocalyptic number.

It is an amenable number.

630771628 is a deficient number, since it is larger than the sum of its proper divisors (473285004).

630771628 is a wasteful number, since it uses less digits than its factorization.

630771628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29472 (or 29470 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 630771628 is about 25115.1672899067. The cubic root of 630771628 is about 857.6117387050.

The spelling of 630771628 in words is "six hundred thirty million, seven hundred seventy-one thousand, six hundred twenty-eight".