630107987 has 4 divisors (see below), whose sum is σ = 630217560. Its totient is φ = 629998416.

The previous prime is 630107971. The next prime is 630108007. The reversal of 630107987 is 789701036.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 630107987 - 2⁴ = 630107971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630107957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45653 + ... + 57830.

It is an arithmetic number, because the mean of its divisors is an integer number (157554390).

Almost surely, 2^630107987 is an apocalyptic number.

630107987 is a deficient number, since it is larger than the sum of its proper divisors (109573).

630107987 is a wasteful number, since it uses less digits than its factorization.

630107987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109572.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 630107987 is about 25101.9518563796. The cubic root of 630107987 is about 857.3108659302.

The spelling of 630107987 in words is "six hundred thirty million, one hundred seven thousand, nine hundred eighty-seven".