1606165 has 32 divisors (see below), whose sum is σ = 2332800. Its totient is φ = 1048320.

The previous prime is 1606153. The next prime is 1606201. The reversal of 1606165 is 5616061.

It is a de Polignac number, because none of the positive numbers 2^k-1606165 is a prime.

1606165 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 30279 + ... + 30331.

It is an arithmetic number, because the mean of its divisors is an integer number (72900).

2^1606165 is an apocalyptic number.

It is an amenable number.

1606165 is a deficient number, since it is larger than the sum of its proper divisors (726635).

1606165 is a wasteful number, since it uses less digits than its factorization.

1606165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1606165 is about 1267.3456513517. The cubic root of 1606165 is about 117.1107384111.

It can be divided in two parts, 1606 and 165, that added together give a palindrome (1771).

The spelling of 1606165 in words is "one million, six hundred six thousand, one hundred sixty-five".