171968417 has 4 divisors (see below), whose sum is σ = 172998336. Its totient is φ = 170938500.

The previous prime is 171968353. The next prime is 171968429. The reversal of 171968417 is 714869171.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 171968417 - 2⁶ = 171968353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171968477) 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, 514709 + ... + 515042.

It is an arithmetic number, because the mean of its divisors is an integer number (43249584).

Almost surely, 2^171968417 is an apocalyptic number.

It is an amenable number.

171968417 is a deficient number, since it is larger than the sum of its proper divisors (1029919).

171968417 is a wasteful number, since it uses less digits than its factorization.

171968417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029918.

The product of its digits is 84672, while the sum is 44.

The square root of 171968417 is about 13113.6729027378. The cubic root of 171968417 is about 556.0957353306.

The spelling of 171968417 in words is "one hundred seventy-one million, nine hundred sixty-eight thousand, four hundred seventeen".