630685 has 8 divisors (see below), whose sum is σ = 825696. Its totient is φ = 458640.

The previous prime is 630677. The next prime is 630689. The reversal of 630685 is 586036.

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

It is not a de Polignac number, because 630685 - 2³ = 630677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5679 + ... + 5788.

It is an arithmetic number, because the mean of its divisors is an integer number (103212).

2⁶³⁰⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

630685 is a deficient number, since it is larger than the sum of its proper divisors (195011).

630685 is a wasteful number, since it uses less digits than its factorization.

630685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11483.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 630685 is about 794.1567855279. The cubic root of 630685 is about 85.7572476428.

The spelling of 630685 in words is "six hundred thirty thousand, six hundred eighty-five".