630585689 has 2 divisors, whose sum is σ = 630585690. Its totient is φ = 630585688.

The previous prime is 630585677. The next prime is 630585701. The reversal of 630585689 is 986585036.

It is a balanced prime because it is at equal distance from previous prime (630585677) and next prime (630585701).

It can be written as a sum of positive squares in only one way, i.e., 445843225 + 184742464 = 21115^2 + 13592^2 .

It is a cyclic number.

It is not a de Polignac number, because 630585689 - 2²⁰ = 629537113 is a prime.

It is a super-2 number, since 2×630585689² = 795276622343209442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (630585589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315292844 + 315292845.

It is an arithmetic number, because the mean of its divisors is an integer number (315292845).

Almost surely, 2^630585689 is an apocalyptic number.

It is an amenable number.

630585689 is a deficient number, since it is larger than the sum of its proper divisors (1).

630585689 is an equidigital number, since it uses as much as digits as its factorization.

630585689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The square root of 630585689 is about 25111.4652897835. The cubic root of 630585689 is about 857.5274614307.

The spelling of 630585689 in words is "six hundred thirty million, five hundred eighty-five thousand, six hundred eighty-nine".