630278984 has 16 divisors (see below), whose sum is σ = 1192616700. Its totient is φ = 312247872.

The previous prime is 630278981. The next prime is 630278989. The reversal of 630278984 is 489872036.

It can be written as a sum of positive squares in 2 ways, for example, as 629508100 + 770884 = 25090^2 + 878^2 .

It is not an unprimeable number, because it can be changed into a prime (630278981) 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, 360527 + ... + 362270.

Almost surely, 2^630278984 is an apocalyptic number.

It is an amenable number.

630278984 is a deficient number, since it is larger than the sum of its proper divisors (562337716).

630278984 is a wasteful number, since it uses less digits than its factorization.

630278984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722912 (or 722908 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 630278984 is about 25105.3576752055. The cubic root of 630278984 is about 857.3884104834.

The spelling of 630278984 in words is "six hundred thirty million, two hundred seventy-eight thousand, nine hundred eighty-four".