630731450 has 24 divisors (see below), whose sum is σ = 1242171612. Its totient is φ = 237451520.

The previous prime is 630731447. The next prime is 630731459. The reversal of 630731450 is 54137036.

It can be written as a sum of positive squares in 6 ways, for example, as 163609681 + 467121769 = 12791^2 + 21613^2 .

It is not an unprimeable number, because it can be changed into a prime (630731459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 370169 + ... + 371868.

Almost surely, 2^630731450 is an apocalyptic number.

630731450 is a deficient number, since it is larger than the sum of its proper divisors (611440162).

630731450 is a wasteful number, since it uses less digits than its factorization.

630731450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742066 (or 742061 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 630731450 is about 25114.3674019474. The cubic root of 630731450 is about 857.5935293381.

Adding to 630731450 its reverse (54137036), we get a palindrome (684868486).

The spelling of 630731450 in words is "six hundred thirty million, seven hundred thirty-one thousand, four hundred fifty".