170961091 has 8 divisors (see below), whose sum is σ = 195528704. Its totient is φ = 146429640.

The previous prime is 170961071. The next prime is 170961097. The reversal of 170961091 is 190169071.

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

It is not a de Polignac number, because 170961091 - 2⁵ = 170961059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (170961097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996 + ... + 18598.

It is an arithmetic number, because the mean of its divisors is an integer number (24441088).

Almost surely, 2^170961091 is an apocalyptic number.

170961091 is a deficient number, since it is larger than the sum of its proper divisors (24567613).

170961091 is a wasteful number, since it uses less digits than its factorization.

170961091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18081.

The product of its (nonzero) digits is 3402, while the sum is 34.

The square root of 170961091 is about 13075.2090231858. The cubic root of 170961091 is about 555.0078087801.

The spelling of 170961091 in words is "one hundred seventy million, nine hundred sixty-one thousand, ninety-one".