171106649 has 16 divisors (see below), whose sum is σ = 211465728. Its totient is φ = 135094272.

The previous prime is 171106643. The next prime is 171106651. The reversal of 171106649 is 946601171.

It is a cyclic number.

It is not a de Polignac number, because 171106649 - 2⁸ = 171106393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (171106643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9704 + ... + 20889.

It is an arithmetic number, because the mean of its divisors is an integer number (13216608).

Almost surely, 2^171106649 is an apocalyptic number.

It is an amenable number.

171106649 is a deficient number, since it is larger than the sum of its proper divisors (40359079).

171106649 is a wasteful number, since it uses less digits than its factorization.

171106649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30664.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 171106649 is about 13080.7740214408. The cubic root of 171106649 is about 555.1652771836.

The spelling of 171106649 in words is "one hundred seventy-one million, one hundred six thousand, six hundred forty-nine".