634671133 has 2 divisors, whose sum is σ = 634671134. Its totient is φ = 634671132.

The previous prime is 634671077. The next prime is 634671137. The reversal of 634671133 is 331176436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 513384964 + 121286169 = 22658^2 + 11013^2 .

It is a cyclic number.

It is not a de Polignac number, because 634671133 - 2¹⁷ = 634540061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634671137) 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, 317335566 + 317335567.

It is an arithmetic number, because the mean of its divisors is an integer number (317335567).

Almost surely, 2^634671133 is an apocalyptic number.

It is an amenable number.

634671133 is a deficient number, since it is larger than the sum of its proper divisors (1).

634671133 is an equidigital number, since it uses as much as digits as its factorization.

634671133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 34.

The square root of 634671133 is about 25192.6801472174. The cubic root of 634671133 is about 859.3753951258.

The spelling of 634671133 in words is "six hundred thirty-four million, six hundred seventy-one thousand, one hundred thirty-three".