630965 has 8 divisors (see below), whose sum is σ = 771768. Its totient is φ = 495040.

The previous prime is 630941. The next prime is 630967. The reversal of 630965 is 569036.

It can be written as a sum of positive squares in 4 ways, for example, as 2116 + 628849 = 46^2 + 793^2 .

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

It is not a de Polignac number, because 630965 - 2⁶ = 630901 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630967) 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, 926 + ... + 1455.

It is an arithmetic number, because the mean of its divisors is an integer number (96471).

2⁶³⁰⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

630965 is a deficient number, since it is larger than the sum of its proper divisors (140803).

630965 is a wasteful number, since it uses less digits than its factorization.

630965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 630965 is about 794.3330535739. Note that the first 3 decimals coincide. The cubic root of 630965 is about 85.7699367437.

The spelling of 630965 in words is "six hundred thirty thousand, nine hundred sixty-five".