1200605 has 8 divisors (see below), whose sum is σ = 1646592. Its totient is φ = 823248.

The previous prime is 1200583. The next prime is 1200607. The reversal of 1200605 is 5060021.

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 1200605 - 2⁸ = 1200349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1200605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200607) 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 7 ways as a sum of consecutive naturals, for example, 17117 + ... + 17186.

It is an arithmetic number, because the mean of its divisors is an integer number (205824).

2^1200605 is an apocalyptic number.

It is an amenable number.

1200605 is a deficient number, since it is larger than the sum of its proper divisors (445987).

1200605 is an equidigital number, since it uses as much as digits as its factorization.

1200605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34315.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1200605 is about 1095.7212236696. The cubic root of 1200605 is about 106.2837124855.

Adding to 1200605 its reverse (5060021), we get a palindrome (6260626).

The spelling of 1200605 in words is "one million, two hundred thousand, six hundred five".