630736 has 20 divisors (see below), whose sum is σ = 1240000. Its totient is φ = 310752.

The previous prime is 630733. The next prime is 630737. The reversal of 630736 is 637036.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 630736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (62000).

2⁶³⁰⁷³⁶ is an apocalyptic number.

It is an amenable number.

630736 is a deficient number, since it is larger than the sum of its proper divisors (609264).

630736 is a wasteful number, since it uses less digits than its factorization.

630736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 630736 is about 794.1888944074. The cubic root of 630736 is about 85.7595591516.

The spelling of 630736 in words is "six hundred thirty thousand, seven hundred thirty-six".