170397 has 8 divisors (see below), whose sum is σ = 252480. Its totient is φ = 113580.

The previous prime is 170393. The next prime is 170413. The reversal of 170397 is 793071.

It is not a de Polignac number, because 170397 - 2² = 170393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 6311 = 170397 / (1 + 7 + 0 + 3 + 9 + 7).

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 170397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170393) 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, 3129 + ... + 3182.

It is an arithmetic number, because the mean of its divisors is an integer number (31560).

2¹⁷⁰³⁹⁷ is an apocalyptic number.

It is an amenable number.

170397 is a deficient number, since it is larger than the sum of its proper divisors (82083).

170397 is an equidigital number, since it uses as much as digits as its factorization.

170397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6320 (or 6314 counting only the distinct ones).

The product of its (nonzero) digits is 1323, while the sum is 27.

The square root of 170397 is about 412.7917150331. The cubic root of 170397 is about 55.4396714810.

The spelling of 170397 in words is "one hundred seventy thousand, three hundred ninety-seven".