630987 has 8 divisors (see below), whose sum is σ = 961536. Its totient is φ = 360552.

The previous prime is 630967. The next prime is 630997. The reversal of 630987 is 789036.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 630987 - 2¹⁰ = 629963 is a prime.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 630987.

It is not an unprimeable number, because it can be changed into a prime (630907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15003 + ... + 15044.

It is an arithmetic number, because the mean of its divisors is an integer number (120192).

2⁶³⁰⁹⁸⁷ is an apocalyptic number.

630987 is a deficient number, since it is larger than the sum of its proper divisors (330549).

630987 is a wasteful number, since it uses less digits than its factorization.

630987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30057.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 630987 is about 794.3469015487. The cubic root of 630987 is about 85.7709335854.

The spelling of 630987 in words is "six hundred thirty thousand, nine hundred eighty-seven".