634858841 has 2 divisors, whose sum is σ = 634858842. Its totient is φ = 634858840.

The previous prime is 634858817. The next prime is 634858867. The reversal of 634858841 is 148858436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 483076441 + 151782400 = 21979^2 + 12320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634858841 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (634858871) 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, 317429420 + 317429421.

It is an arithmetic number, because the mean of its divisors is an integer number (317429421).

Almost surely, 2^634858841 is an apocalyptic number.

It is an amenable number.

634858841 is a deficient number, since it is larger than the sum of its proper divisors (1).

634858841 is an equidigital number, since it uses as much as digits as its factorization.

634858841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 737280, while the sum is 47.

The square root of 634858841 is about 25196.4053190133. The cubic root of 634858841 is about 859.4601086768.

The spelling of 634858841 in words is "six hundred thirty-four million, eight hundred fifty-eight thousand, eight hundred forty-one".