630441 has 12 divisors (see below), whose sum is σ = 1040832. Its totient is φ = 360216.

The previous prime is 630433. The next prime is 630451. The reversal of 630441 is 144036.

It is not a de Polignac number, because 630441 - 2³ = 630433 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

630441 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (630451) 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 11 ways as a sum of consecutive naturals, for example, 4941 + ... + 5066.

It is an arithmetic number, because the mean of its divisors is an integer number (86736).

2⁶³⁰⁴⁴¹ is an apocalyptic number.

It is an amenable number.

630441 is a deficient number, since it is larger than the sum of its proper divisors (410391).

630441 is a wasteful number, since it uses less digits than its factorization.

630441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10020 (or 10017 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 630441 is about 794.0031486084. The cubic root of 630441 is about 85.7461869350.

Adding to 630441 its reverse (144036), we get a palindrome (774477).

The spelling of 630441 in words is "six hundred thirty thousand, four hundred forty-one".