630555312 has 40 divisors (see below), whose sum is σ = 1651257904. Its totient is φ = 207304704.

The previous prime is 630555307. The next prime is 630555389. The reversal of 630555312 is 213555036.

It is a self number, because there is not a number n which added to its sum of digits gives 630555312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86473 + ... + 93480.

Almost surely, 2^630555312 is an apocalyptic number.

It is an amenable number.

630555312 is an abundant number, since it is smaller than the sum of its proper divisors (1020702592).

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

630555312 is a wasteful number, since it uses less digits than its factorization.

630555312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180037 (or 180031 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 630555312 is about 25110.8604392601. The cubic root of 630555312 is about 857.5136914121.

The spelling of 630555312 in words is "six hundred thirty million, five hundred fifty-five thousand, three hundred twelve".