630319 has 2 divisors, whose sum is σ = 630320. Its totient is φ = 630318.

The previous prime is 630307. The next prime is 630349. The reversal of 630319 is 913036.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 630319 - 2⁹ = 629807 is a prime.

It is a super-2 number, since 2×630319² = 794604083522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 630319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315159 + 315160.

It is an arithmetic number, because the mean of its divisors is an integer number (315160).

2⁶³⁰³¹⁹ is an apocalyptic number.

630319 is a deficient number, since it is larger than the sum of its proper divisors (1).

630319 is an equidigital number, since it uses as much as digits as its factorization.

630319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 630319 is about 793.9263189994. The cubic root of 630319 is about 85.7406555109.

It can be divided in two parts, 630 and 319, that added together give a palindrome (949).

The spelling of 630319 in words is "six hundred thirty thousand, three hundred nineteen".