629713321 has 2 divisors, whose sum is σ = 629713322. Its totient is φ = 629713320.

The previous prime is 629713291. The next prime is 629713327. The reversal of 629713321 is 123317926.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452157696 + 177555625 = 21264^2 + 13325^2 .

It is a cyclic number.

It is not a de Polignac number, because 629713321 - 2⁵ = 629713289 is a prime.

It is not a weakly prime, because it can be changed into another prime (629713327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314856660 + 314856661.

It is an arithmetic number, because the mean of its divisors is an integer number (314856661).

Almost surely, 2^629713321 is an apocalyptic number.

It is an amenable number.

629713321 is a deficient number, since it is larger than the sum of its proper divisors (1).

629713321 is an equidigital number, since it uses as much as digits as its factorization.

629713321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 34.

The square root of 629713321 is about 25094.0893638323. The cubic root of 629713321 is about 857.1318372962.

The spelling of 629713321 in words is "six hundred twenty-nine million, seven hundred thirteen thousand, three hundred twenty-one".