629682689 has 2 divisors, whose sum is σ = 629682690. Its totient is φ = 629682688.

The previous prime is 629682673. The next prime is 629682763. The reversal of 629682689 is 986286926.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407434225 + 222248464 = 20185^2 + 14908^2 .

It is a cyclic number.

It is not a de Polignac number, because 629682689 - 2⁴ = 629682673 is a prime.

It is not a weakly prime, because it can be changed into another prime (629682619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314841344 + 314841345.

It is an arithmetic number, because the mean of its divisors is an integer number (314841345).

Almost surely, 2^629682689 is an apocalyptic number.

It is an amenable number.

629682689 is a deficient number, since it is larger than the sum of its proper divisors (1).

629682689 is an equidigital number, since it uses as much as digits as its factorization.

629682689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 56.

The square root of 629682689 is about 25093.4790134808. The cubic root of 629682689 is about 857.1179388616.

The spelling of 629682689 in words is "six hundred twenty-nine million, six hundred eighty-two thousand, six hundred eighty-nine".