171868073 has 8 divisors (see below), whose sum is σ = 186333000. Its totient is φ = 157580928.

The previous prime is 171868069. The next prime is 171868093. The reversal of 171868073 is 370868171.

It can be written as a sum of positive squares in 4 ways, for example, as 7823209 + 164044864 = 2797^2 + 12808^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 171868073 - 2² = 171868069 is a prime.

It is a Duffinian number.

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 171868073.

It is not an unprimeable number, because it can be changed into a prime (171868043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42428 + ... + 46301.

It is an arithmetic number, because the mean of its divisors is an integer number (23291625).

Almost surely, 2^171868073 is an apocalyptic number.

171868073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

171868073 is a deficient number, since it is larger than the sum of its proper divisors (14464927).

171868073 is a wasteful number, since it uses less digits than its factorization.

171868073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88891.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 171868073 is about 13109.8464140508. The cubic root of 171868073 is about 555.9875532038.

The spelling of 171868073 in words is "one hundred seventy-one million, eight hundred sixty-eight thousand, seventy-three".