166897 has 8 divisors (see below), whose sum is σ = 176256. Its totient is φ = 157872.

The previous prime is 166871. The next prime is 166909. The reversal of 166897 is 798661.

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

It is a cyclic number.

It is not a de Polignac number, because 166897 - 2¹⁵ = 134129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2458 + ... + 2524.

It is an arithmetic number, because the mean of its divisors is an integer number (22032).

2¹⁶⁶⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

166897 is a deficient number, since it is larger than the sum of its proper divisors (9359).

166897 is an equidigital number, since it uses as much as digits as its factorization.

166897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167.

The product of its digits is 18144, while the sum is 37.

The square root of 166897 is about 408.5302926345. The cubic root of 166897 is about 55.0574606089.

The spelling of 166897 in words is "one hundred sixty-six thousand, eight hundred ninety-seven".