630255808 has 56 divisors (see below), whose sum is σ = 1539292832. Its totient is φ = 249329664.

The previous prime is 630255799. The next prime is 630255809. The reversal of 630255808 is 808552036.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (630255809) 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 7 ways as a sum of consecutive naturals, for example, 48285 + ... + 59932.

It is an arithmetic number, because the mean of its divisors is an integer number (27487372).

Almost surely, 2^630255808 is an apocalyptic number.

It is an amenable number.

630255808 is an abundant number, since it is smaller than the sum of its proper divisors (909037024).

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

630255808 is a wasteful number, since it uses less digits than its factorization.

630255808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108249 (or 108239 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 630255808 is about 25104.8960961801. The cubic root of 630255808 is about 857.3779013396.

The spelling of 630255808 in words is "six hundred thirty million, two hundred fifty-five thousand, eight hundred eight".