630836 has 12 divisors (see below), whose sum is σ = 1169028. Its totient is φ = 296832.

The previous prime is 630827. The next prime is 630841. The reversal of 630836 is 638036.

It can be written as a sum of positive squares in 2 ways, for example, as 504100 + 126736 = 710^2 + 356^2 .

It is a congruent number.

It is an unprimeable number.

630836 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 in 3 ways as a sum of consecutive naturals, for example, 4571 + ... + 4706.

It is an arithmetic number, because the mean of its divisors is an integer number (97419).

2⁶³⁰⁸³⁶ is an apocalyptic number.

It is an amenable number.

630836 is a deficient number, since it is larger than the sum of its proper divisors (538192).

630836 is a wasteful number, since it uses less digits than its factorization.

630836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9298 (or 9296 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 630836 is about 794.2518492267. The cubic root of 630836 is about 85.7640911601.

The spelling of 630836 in words is "six hundred thirty thousand, eight hundred thirty-six".