171668045 has 8 divisors (see below), whose sum is σ = 206211096. Its totient is φ = 137194816.

The previous prime is 171667973. The next prime is 171668047. The reversal of 171668045 is 540866171.

It can be written as a sum of positive squares in 4 ways, for example, as 1261129 + 170406916 = 1123^2 + 13054^2 .

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 171668045 - 2¹⁰ = 171667021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171668047) 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, 11882 + ... + 22011.

It is an arithmetic number, because the mean of its divisors is an integer number (25776387).

Almost surely, 2^171668045 is an apocalyptic number.

It is an amenable number.

171668045 is a deficient number, since it is larger than the sum of its proper divisors (34543051).

171668045 is a wasteful number, since it uses less digits than its factorization.

171668045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34911.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 171668045 is about 13102.2152707090. The cubic root of 171668045 is about 555.7717748081.

The spelling of 171668045 in words is "one hundred seventy-one million, six hundred sixty-eight thousand, forty-five".