171970345 has 8 divisors (see below), whose sum is σ = 208368576. Its totient is φ = 136240176.

The previous prime is 171970343. The next prime is 171970369. The reversal of 171970345 is 543079171.

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 171970345 - 2¹ = 171970343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171970343) 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, 166447 + ... + 167476.

It is an arithmetic number, because the mean of its divisors is an integer number (26046072).

Almost surely, 2^171970345 is an apocalyptic number.

It is an amenable number.

171970345 is a deficient number, since it is larger than the sum of its proper divisors (36398231).

171970345 is a wasteful number, since it uses less digits than its factorization.

171970345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334031.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 171970345 is about 13113.7464135921. The cubic root of 171970345 is about 556.0978135195.

The spelling of 171970345 in words is "one hundred seventy-one million, nine hundred seventy thousand, three hundred forty-five".