634159 has 2 divisors, whose sum is σ = 634160. Its totient is φ = 634158.

The previous prime is 634157. The next prime is 634169. The reversal of 634159 is 951436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634159 - 2¹ = 634157 is a prime.

Together with 634157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317079 + 317080.

It is an arithmetic number, because the mean of its divisors is an integer number (317080).

2⁶³⁴¹⁵⁹ is an apocalyptic number.

634159 is a deficient number, since it is larger than the sum of its proper divisors (1).

634159 is an equidigital number, since it uses as much as digits as its factorization.

634159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 28.

The square root of 634159 is about 796.3410073580. The cubic root of 634159 is about 85.9144181977.

It can be divided in two parts, 6341 and 59, that added together give a square (6400 = 80²).

The spelling of 634159 in words is "six hundred thirty-four thousand, one hundred fifty-nine".