1208565 has 24 divisors (see below), whose sum is σ = 2122848. Its totient is φ = 636000.

The previous prime is 1208561. The next prime is 1208569. The reversal of 1208565 is 5658021.

It is an interprime number because it is at equal distance from previous prime (1208561) and next prime (1208569).

It is not a de Polignac number, because 1208565 - 2² = 1208561 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1208561) 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 23 ways as a sum of consecutive naturals, for example, 4690 + ... + 4940.

It is an arithmetic number, because the mean of its divisors is an integer number (88452).

2^1208565 is an apocalyptic number.

1208565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1208565 is a deficient number, since it is larger than the sum of its proper divisors (914283).

1208565 is a wasteful number, since it uses less digits than its factorization.

1208565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1208565 is about 1099.3475337672. The cubic root of 1208565 is about 106.5180819658.

The spelling of 1208565 in words is "one million, two hundred eight thousand, five hundred sixty-five".