170912897 has 2 divisors, whose sum is σ = 170912898. Its totient is φ = 170912896.

The previous prime is 170912891. The next prime is 170912899. The reversal of 170912897 is 798219071.

170912897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95726656 + 75186241 = 9784^2 + 8671^2 .

It is a cyclic number.

It is not a de Polignac number, because 170912897 - 2⁴ = 170912881 is a prime.

It is a super-2 number, since 2×170912897² = 58422436721865218, which contains 22 as substring.

Together with 170912899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (170912891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85456448 + 85456449.

It is an arithmetic number, because the mean of its divisors is an integer number (85456449).

Almost surely, 2^170912897 is an apocalyptic number.

It is an amenable number.

170912897 is a deficient number, since it is larger than the sum of its proper divisors (1).

170912897 is an equidigital number, since it uses as much as digits as its factorization.

170912897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 44.

The square root of 170912897 is about 13073.3659399559. The cubic root of 170912897 is about 554.9556515709.

The spelling of 170912897 in words is "one hundred seventy million, nine hundred twelve thousand, eight hundred ninety-seven".