1283565 has 8 divisors (see below), whose sum is σ = 2053728. Its totient is φ = 684560.

The previous prime is 1283563. The next prime is 1283573. The reversal of 1283565 is 5653821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1283565 - 2¹ = 1283563 is a prime.

1283565 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42771 + ... + 42800.

It is an arithmetic number, because the mean of its divisors is an integer number (256716).

2^1283565 is an apocalyptic number.

1283565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1283565 is a deficient number, since it is larger than the sum of its proper divisors (770163).

1283565 is an equidigital number, since it uses as much as digits as its factorization.

1283565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85579.

The product of its digits is 7200, while the sum is 30.

The square root of 1283565 is about 1132.9452767014. The cubic root of 1283565 is about 108.6774122553.

The spelling of 1283565 in words is "one million, two hundred eighty-three thousand, five hundred sixty-five".