630169 has 2 divisors, whose sum is σ = 630170. Its totient is φ = 630168.

The previous prime is 630167. The next prime is 630181. The reversal of 630169 is 961036.

630169 is nontrivially palindromic in base 16.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 585225 + 44944 = 765^2 + 212^2 .

It is a cyclic number.

It is not a de Polignac number, because 630169 - 2¹ = 630167 is a prime.

It is a super-2 number, since 2×630169² = 794225937122, which contains 22 as substring.

Together with 630167, it forms a pair of twin primes.

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

630169 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (630163) 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, 315084 + 315085.

It is an arithmetic number, because the mean of its divisors is an integer number (315085).

2⁶³⁰¹⁶⁹ is an apocalyptic number.

It is an amenable number.

630169 is a deficient number, since it is larger than the sum of its proper divisors (1).

630169 is an equidigital number, since it uses as much as digits as its factorization.

630169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 630169 is about 793.8318461740. The cubic root of 630169 is about 85.7338536013.

The spelling of 630169 in words is "six hundred thirty thousand, one hundred sixty-nine".