1206655 has 8 divisors (see below), whose sum is σ = 1454112. Its totient is φ = 961248.

The previous prime is 1206637. The next prime is 1206679. The reversal of 1206655 is 5566021.

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 1206655 - 2¹¹ = 1204607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1542 + ... + 2188.

It is an arithmetic number, because the mean of its divisors is an integer number (181764).

2^1206655 is an apocalyptic number.

1206655 is a deficient number, since it is larger than the sum of its proper divisors (247457).

1206655 is an equidigital number, since it uses as much as digits as its factorization.

1206655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1206655 is about 1098.4784931896. The cubic root of 1206655 is about 106.4619391278.

It can be divided in two parts, 12066 and 55, that added together give a palindrome (12121).

The spelling of 1206655 in words is "one million, two hundred six thousand, six hundred fifty-five".