169680017 has 8 divisors (see below), whose sum is σ = 187189800. Its totient is φ = 152807040.

The previous prime is 169679999. The next prime is 169680029. The reversal of 169680017 is 710086961.

It can be written as a sum of positive squares in 4 ways, for example, as 3682561 + 165997456 = 1919^2 + 12884^2 .

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 169680017 - 2¹² = 169675921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169680067) 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, 158642 + ... + 159707.

It is an arithmetic number, because the mean of its divisors is an integer number (23398725).

Almost surely, 2^169680017 is an apocalyptic number.

It is an amenable number.

169680017 is a deficient number, since it is larger than the sum of its proper divisors (17509783).

169680017 is a wasteful number, since it uses less digits than its factorization.

169680017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318403.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 169680017 is about 13026.1282428817. The cubic root of 169680017 is about 553.6180394420.

The spelling of 169680017 in words is "one hundred sixty-nine million, six hundred eighty thousand, seventeen".