630289 has 6 divisors (see below), whose sum is σ = 692930. Its totient is φ = 572880.

The previous prime is 630281. The next prime is 630299. The reversal of 630289 is 982036.

It can be written as a sum of positive squares in only one way, i.e., 627264 + 3025 = 792^2 + 55^2 .

It is not a de Polignac number, because 630289 - 2³ = 630281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2484 + ... + 2725.

2⁶³⁰²⁸⁹ is an apocalyptic number.

It is an amenable number.

630289 is a deficient number, since it is larger than the sum of its proper divisors (62641).

630289 is a wasteful number, since it uses less digits than its factorization.

630289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5231 (or 5220 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 630289 is about 793.9074253337. The cubic root of 630289 is about 85.7392952153.

It can be divided in two parts, 630 and 289, that added together give a palindrome (919).

The spelling of 630289 in words is "six hundred thirty thousand, two hundred eighty-nine".