170842961 has 2 divisors, whose sum is σ = 170842962. Its totient is φ = 170842960.

The previous prime is 170842939. The next prime is 170843027. The reversal of 170842961 is 169248071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97140736 + 73702225 = 9856^2 + 8585^2 .

It is an emirp because it is prime and its reverse (169248071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170842961 - 2⁶ = 170842897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (170842901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85421480 + 85421481.

It is an arithmetic number, because the mean of its divisors is an integer number (85421481).

Almost surely, 2^170842961 is an apocalyptic number.

It is an amenable number.

170842961 is a deficient number, since it is larger than the sum of its proper divisors (1).

170842961 is an equidigital number, since it uses as much as digits as its factorization.

170842961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 170842961 is about 13070.6909151735. The cubic root of 170842961 is about 554.8799469789.

The spelling of 170842961 in words is "one hundred seventy million, eight hundred forty-two thousand, nine hundred sixty-one".