1230565 has 8 divisors (see below), whose sum is σ = 1687680. Its totient is φ = 843792.

The previous prime is 1230547. The next prime is 1230571. The reversal of 1230565 is 5650321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1230565 - 2¹³ = 1222373 is a prime.

It is an alternating number because its digits alternate between odd and even.

1230565 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17545 + ... + 17614.

It is an arithmetic number, because the mean of its divisors is an integer number (210960).

2^1230565 is an apocalyptic number.

It is an amenable number.

1230565 is a deficient number, since it is larger than the sum of its proper divisors (457115).

1230565 is an equidigital number, since it uses as much as digits as its factorization.

1230565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35171.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1230565 is about 1109.3083430679. The cubic root of 1230565 is about 107.1605299948.

Adding to 1230565 its reverse (5650321), we get a palindrome (6880886).

The spelling of 1230565 in words is "one million, two hundred thirty thousand, five hundred sixty-five".