1206165 has 16 divisors (see below), whose sum is σ = 1944576. Its totient is φ = 638400.

The previous prime is 1206157. The next prime is 1206169. The reversal of 1206165 is 5616021.

It is a happy number.

It is not a de Polignac number, because 1206165 - 2³ = 1206157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2655 + ... + 3075.

It is an arithmetic number, because the mean of its divisors is an integer number (121536).

2^1206165 is an apocalyptic number.

1206165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1206165 is a deficient number, since it is larger than the sum of its proper divisors (738411).

1206165 is a wasteful number, since it uses less digits than its factorization.

1206165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1206165 is about 1098.2554347692. The cubic root of 1206165 is about 106.4475264434.

The spelling of 1206165 in words is "one million, two hundred six thousand, one hundred sixty-five".