170641 has 2 divisors, whose sum is σ = 170642. Its totient is φ = 170640.

The previous prime is 170633. The next prime is 170647. The reversal of 170641 is 146071.

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., 103041 + 67600 = 321^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 170641 - 2³ = 170633 is a prime.

It is not a weakly prime, because it can be changed into another prime (170647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85320 + 85321.

It is an arithmetic number, because the mean of its divisors is an integer number (85321).

2¹⁷⁰⁶⁴¹ is an apocalyptic number.

It is an amenable number.

170641 is a deficient number, since it is larger than the sum of its proper divisors (1).

170641 is an equidigital number, since it uses as much as digits as its factorization.

170641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 170641 is about 413.0871578735. The cubic root of 170641 is about 55.4661211410.

The spelling of 170641 in words is "one hundred seventy thousand, six hundred forty-one".