630884 has 6 divisors (see below), whose sum is σ = 1104054. Its totient is φ = 315440.

The previous prime is 630871. The next prime is 630893. The reversal of 630884 is 488036.

It can be written as a sum of positive squares in only one way, i.e., 605284 + 25600 = 778^2 + 160^2 .

It is an unprimeable number.

630884 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78857 + ... + 78864.

It is an arithmetic number, because the mean of its divisors is an integer number (184009).

2⁶³⁰⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

630884 is a deficient number, since it is larger than the sum of its proper divisors (473170).

630884 is a wasteful number, since it uses less digits than its factorization.

630884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157725 (or 157723 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 630884 is about 794.2820657676. The cubic root of 630884 is about 85.7662663540.

The spelling of 630884 in words is "six hundred thirty thousand, eight hundred eighty-four".