170669 has 2 divisors, whose sum is σ = 170670. Its totient is φ = 170668.

The previous prime is 170647. The next prime is 170689. The reversal of 170669 is 966071.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170569 + 100 = 413^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 170669 - 2⁸ = 170413 is a prime.

It is a super-2 number, since 2×170669² = 58255815122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85334 + 85335.

It is an arithmetic number, because the mean of its divisors is an integer number (85335).

2¹⁷⁰⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

170669 is a deficient number, since it is larger than the sum of its proper divisors (1).

170669 is an equidigital number, since it uses as much as digits as its factorization.

170669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 170669 is about 413.1210476362. The cubic root of 170669 is about 55.4691547349.

The spelling of 170669 in words is "one hundred seventy thousand, six hundred sixty-nine".