170135197 has 2 divisors, whose sum is σ = 170135198. Its totient is φ = 170135196.

The previous prime is 170135191. The next prime is 170135221. The reversal of 170135197 is 791531071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104427961 + 65707236 = 10219^2 + 8106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-170135197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170135191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85067598 + 85067599.

It is an arithmetic number, because the mean of its divisors is an integer number (85067599).

Almost surely, 2^170135197 is an apocalyptic number.

It is an amenable number.

170135197 is a deficient number, since it is larger than the sum of its proper divisors (1).

170135197 is an equidigital number, since it uses as much as digits as its factorization.

170135197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6615, while the sum is 34.

The square root of 170135197 is about 13043.5883483035. The cubic root of 170135197 is about 554.1126387589.

The spelling of 170135197 in words is "one hundred seventy million, one hundred thirty-five thousand, one hundred ninety-seven".