630303856 has 60 divisors (see below), whose sum is σ = 1529896872. Its totient is φ = 249346944.

The previous prime is 630303809. The next prime is 630303857. The reversal of 630303856 is 658303036.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630303857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20730 + ... + 41113.

Almost surely, 2^630303856 is an apocalyptic number.

It is an amenable number.

630303856 is an abundant number, since it is smaller than the sum of its proper divisors (899593016).

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

630303856 is a wasteful number, since it uses less digits than its factorization.

630303856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61878 (or 61865 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 630303856 is about 25105.8530227515. The cubic root of 630303856 is about 857.3996883908.

The spelling of 630303856 in words is "six hundred thirty million, three hundred three thousand, eight hundred fifty-six".