634285321 has 2 divisors, whose sum is σ = 634285322. Its totient is φ = 634285320.

The previous prime is 634285319. The next prime is 634285349. The reversal of 634285321 is 123582436.

634285321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 578931721 + 55353600 = 24061^2 + 7440^2 .

It is a cyclic number.

It is not a de Polignac number, because 634285321 - 2¹ = 634285319 is a prime.

Together with 634285319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (634285121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317142660 + 317142661.

It is an arithmetic number, because the mean of its divisors is an integer number (317142661).

Almost surely, 2^634285321 is an apocalyptic number.

It is an amenable number.

634285321 is a deficient number, since it is larger than the sum of its proper divisors (1).

634285321 is an equidigital number, since it uses as much as digits as its factorization.

634285321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 34.

The square root of 634285321 is about 25185.0217589741. The cubic root of 634285321 is about 859.2012237956.

The spelling of 634285321 in words is "six hundred thirty-four million, two hundred eighty-five thousand, three hundred twenty-one".