634841 has 2 divisors, whose sum is σ = 634842. Its totient is φ = 634840.

The previous prime is 634817. The next prime is 634853. The reversal of 634841 is 148436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 633616 + 1225 = 796^2 + 35^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634841 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 634841.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634861) 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, 317420 + 317421.

It is an arithmetic number, because the mean of its divisors is an integer number (317421).

2⁶³⁴⁸⁴¹ is an apocalyptic number.

It is an amenable number.

634841 is a deficient number, since it is larger than the sum of its proper divisors (1).

634841 is an equidigital number, since it uses as much as digits as its factorization.

634841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 634841 is about 796.7691008065. The cubic root of 634841 is about 85.9452057663.

The spelling of 634841 in words is "six hundred thirty-four thousand, eight hundred forty-one".