170289997 has 2 divisors, whose sum is σ = 170289998. Its totient is φ = 170289996.

The previous prime is 170289991. The next prime is 170290009. The reversal of 170289997 is 799982071.

170289997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115218756 + 55071241 = 10734^2 + 7421^2 .

It is a cyclic number.

It is not a de Polignac number, because 170289997 - 2¹⁵ = 170257229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170289991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85144998 + 85144999.

It is an arithmetic number, because the mean of its divisors is an integer number (85144999).

Almost surely, 2^170289997 is an apocalyptic number.

It is an amenable number.

170289997 is a deficient number, since it is larger than the sum of its proper divisors (1).

170289997 is an equidigital number, since it uses as much as digits as its factorization.

170289997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 52.

The square root of 170289997 is about 13049.5209490617. The cubic root of 170289997 is about 554.2806436477.

The spelling of 170289997 in words is "one hundred seventy million, two hundred eighty-nine thousand, nine hundred ninety-seven".