169601 has 4 divisors (see below), whose sum is σ = 175104. Its totient is φ = 164100.

The previous prime is 169591. The next prime is 169607. The reversal of 169601 is 106961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169601 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 169601.

It is not an unprimeable number, because it can be changed into a prime (169607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2705 + ... + 2766.

It is an arithmetic number, because the mean of its divisors is an integer number (43776).

2¹⁶⁹⁶⁰¹ is an apocalyptic number.

It is an amenable number.

169601 is a deficient number, since it is larger than the sum of its proper divisors (5503).

169601 is an equidigital number, since it uses as much as digits as its factorization.

169601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 169601 is about 411.8264197450. The cubic root of 169601 is about 55.3532089370.

It can be divided in two parts, 16960 and 1, that added together give a palindrome (16961).

The spelling of 169601 in words is "one hundred sixty-nine thousand, six hundred one".