630489 has 8 divisors (see below), whose sum is σ = 869760. Its totient is φ = 405776.

The previous prime is 630481. The next prime is 630493. The reversal of 630489 is 984036.

630489 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 630489 - 2³ = 630481 is a prime.

630489 is strictly pandigital in base 7.

It is a Curzon number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (630481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3537 + ... + 3710.

It is an arithmetic number, because the mean of its divisors is an integer number (108720).

2⁶³⁰⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

630489 is a deficient number, since it is larger than the sum of its proper divisors (239271).

630489 is a wasteful number, since it uses less digits than its factorization.

630489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7279.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 630489 is about 794.0333746134. The cubic root of 630489 is about 85.7483630374.

The spelling of 630489 in words is "six hundred thirty thousand, four hundred eighty-nine".