630213 has 4 divisors (see below), whose sum is σ = 840288. Its totient is φ = 420140.

The previous prime is 630197. The next prime is 630229. The reversal of 630213 is 312036.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (630197) and next prime (630229).

It is a cyclic number.

It is not a de Polignac number, because 630213 - 2⁴ = 630197 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 630192 and 630201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105033 + ... + 105038.

It is an arithmetic number, because the mean of its divisors is an integer number (210072).

2⁶³⁰²¹³ is an apocalyptic number.

It is an amenable number.

630213 is a deficient number, since it is larger than the sum of its proper divisors (210075).

630213 is a wasteful number, since it uses less digits than its factorization.

630213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210074.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 630213 is about 793.8595593680. The cubic root of 630213 is about 85.7358489399.

Adding to 630213 its reverse (312036), we get a palindrome (942249).

The spelling of 630213 in words is "six hundred thirty thousand, two hundred thirteen".