630303808 has 28 divisors (see below), whose sum is σ = 1255658652. Its totient is φ = 313917440.

The previous prime is 630303797. The next prime is 630303809. The reversal of 630303808 is 808303036.

It can be written as a sum of positive squares in 2 ways, for example, as 536756224 + 93547584 = 23168^2 + 9672^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 630303808.

It is not an unprimeable number, because it can be changed into a prime (630303809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2713 + ... + 35608.

Almost surely, 2^630303808 is an apocalyptic number.

It is an amenable number.

630303808 is a deficient number, since it is larger than the sum of its proper divisors (625354844).

630303808 is a wasteful number, since it uses less digits than its factorization.

630303808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38590 (or 38580 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 630303808 is about 25105.8520667991. The cubic root of 630303808 is about 857.3996666261.

The spelling of 630303808 in words is "six hundred thirty million, three hundred three thousand, eight hundred eight".