630826 has 24 divisors (see below), whose sum is σ = 1134756. Its totient is φ = 262080.

The previous prime is 630823. The next prime is 630827. The reversal of 630826 is 628036.

630826 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in 2 ways, for example, as 540225 + 90601 = 735^2 + 301^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 630826.

It is not an unprimeable number, because it can be changed into a prime (630823) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3940 + ... + 4096.

2⁶³⁰⁸²⁶ is an apocalyptic number.

630826 is a deficient number, since it is larger than the sum of its proper divisors (503930).

630826 is a wasteful number, since it uses less digits than its factorization.

630826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 630826 is about 794.2455539693. The cubic root of 630826 is about 85.7636379808.

The spelling of 630826 in words is "six hundred thirty thousand, eight hundred twenty-six".