630635 has 4 divisors (see below), whose sum is σ = 756768. Its totient is φ = 504504.

The previous prime is 630613. The next prime is 630659. The reversal of 630635 is 536036.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 630635 - 2¹⁰ = 629611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 630635.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 63059 + ... + 63068.

It is an arithmetic number, because the mean of its divisors is an integer number (189192).

2⁶³⁰⁶³⁵ is an apocalyptic number.

630635 is a deficient number, since it is larger than the sum of its proper divisors (126133).

630635 is a wasteful number, since it uses less digits than its factorization.

630635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126132.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 630635 is about 794.1253049740. The cubic root of 630635 is about 85.7549813368.

The spelling of 630635 in words is "six hundred thirty thousand, six hundred thirty-five".