630349 has 2 divisors, whose sum is σ = 630350. Its totient is φ = 630348.

The previous prime is 630319. The next prime is 630353. The reversal of 630349 is 943036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 455625 + 174724 = 675^2 + 418^2 .

It is a cyclic number.

It is not a de Polignac number, because 630349 - 2¹¹ = 628301 is a prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630319) 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 as a sum of consecutive naturals, namely, 315174 + 315175.

It is an arithmetic number, because the mean of its divisors is an integer number (315175).

2⁶³⁰³⁴⁹ is an apocalyptic number.

It is an amenable number.

630349 is a deficient number, since it is larger than the sum of its proper divisors (1).

630349 is an equidigital number, since it uses as much as digits as its factorization.

630349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 630349 is about 793.9452122156. The cubic root of 630349 is about 85.7420157633.

It can be divided in two parts, 630 and 349, that added together give a palindrome (979).

The spelling of 630349 in words is "six hundred thirty thousand, three hundred forty-nine".