634426171 has 4 divisors (see below), whose sum is σ = 649180312. Its totient is φ = 619672032.

The previous prime is 634426159. The next prime is 634426211. The reversal of 634426171 is 171624436.

634426171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634426171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634426141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7377006 + ... + 7377091.

It is an arithmetic number, because the mean of its divisors is an integer number (162295078).

Almost surely, 2^634426171 is an apocalyptic number.

634426171 is a deficient number, since it is larger than the sum of its proper divisors (14754141).

634426171 is a wasteful number, since it uses less digits than its factorization.

634426171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14754140.

The product of its digits is 24192, while the sum is 34.

The square root of 634426171 is about 25187.8179086637. The cubic root of 634426171 is about 859.2648174348.

The spelling of 634426171 in words is "six hundred thirty-four million, four hundred twenty-six thousand, one hundred seventy-one".