630890568 has 96 divisors (see below), whose sum is σ = 2130298560. Its totient is φ = 163866240.

The previous prime is 630890549. The next prime is 630890569. The reversal of 630890568 is 865098036.

630890568 is a `hidden beast` number, since 6 + 3 + 0 + 89 + 0 + 568 = 666.

It is not an unprimeable number, because it can be changed into a prime (630890569) 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 23 ways as a sum of consecutive naturals, for example, 51355 + ... + 62442.

It is an arithmetic number, because the mean of its divisors is an integer number (22190610).

Almost surely, 2^630890568 is an apocalyptic number.

It is an amenable number.

630890568 is an abundant number, since it is smaller than the sum of its proper divisors (1499407992).

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

630890568 is a wasteful number, since it uses less digits than its factorization.

630890568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113827 (or 113820 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 630890568 is about 25117.5350701457. The cubic root of 630890568 is about 857.6656398450.

It can be divided in two parts, 630 and 890568, that added together give a palindrome (891198).

The spelling of 630890568 in words is "six hundred thirty million, eight hundred ninety thousand, five hundred sixty-eight".