630415213 has 8 divisors (see below), whose sum is σ = 654731640. Its totient is φ = 606481920.

The previous prime is 630415207. The next prime is 630415223. The reversal of 630415213 is 312514036.

It can be written as a sum of positive squares in 4 ways, for example, as 205148329 + 425266884 = 14323^2 + 20622^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 630415213 - 2²⁹ = 93544301 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 (630415223) 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, 92428 + ... + 99013.

It is an arithmetic number, because the mean of its divisors is an integer number (81841455).

Almost surely, 2^630415213 is an apocalyptic number.

It is an amenable number.

630415213 is a deficient number, since it is larger than the sum of its proper divisors (24316427).

630415213 is a wasteful number, since it uses less digits than its factorization.

630415213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191567.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 630415213 is about 25108.0706745859. The cubic root of 630415213 is about 857.4501782374.

Adding to 630415213 its reverse (312514036), we get a palindrome (942929249).

The spelling of 630415213 in words is "six hundred thirty million, four hundred fifteen thousand, two hundred thirteen".