630936 has 64 divisors (see below), whose sum is σ = 1843200. Its totient is φ = 199584.

The previous prime is 630919. The next prime is 630941. The reversal of 630936 is 639036.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

630936 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 15 ways as a sum of consecutive naturals, for example, 4905 + ... + 5031.

It is an arithmetic number, because the mean of its divisors is an integer number (28800).

2⁶³⁰⁹³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (921600).

630936 is an abundant number, since it is smaller than the sum of its proper divisors (1212264).

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

630936 is a wasteful number, since it uses less digits than its factorization.

630936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 630936 is about 794.3147990564. The cubic root of 630936 is about 85.7686226897.

Subtracting 630936 from its reverse (639036), we obtain a square (8100 = 90²).

The spelling of 630936 in words is "six hundred thirty thousand, nine hundred thirty-six".