630650 has 12 divisors (see below), whose sum is σ = 1173102. Its totient is φ = 252240.

The previous prime is 630613. The next prime is 630659. The reversal of 630650 is 56036.

630650 = T₂₁₂ + T₂₁₃ + ... + T₂₃₆.

It can be written as a sum of positive squares in 3 ways, for example, as 444889 + 185761 = 667^2 + 431^2 .

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (630659) 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 5 ways as a sum of consecutive naturals, for example, 6257 + ... + 6356.

2⁶³⁰⁶⁵⁰ is an apocalyptic number.

630650 is a deficient number, since it is larger than the sum of its proper divisors (542452).

630650 is a wasteful number, since it uses less digits than its factorization.

630650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12625 (or 12620 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 630650 is about 794.1347492712. The cubic root of 630650 is about 85.7556612412.

Adding to 630650 its reverse (56036), we get a palindrome (686686).

The spelling of 630650 in words is "six hundred thirty thousand, six hundred fifty".