1228685 has 8 divisors (see below), whose sum is σ = 1522176. Its totient is φ = 951120.

The previous prime is 1228679. The next prime is 1228691. The reversal of 1228685 is 5868221.

It is an interprime number because it is at equal distance from previous prime (1228679) and next prime (1228691).

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

It is not a de Polignac number, because 1228685 - 2⁸ = 1228429 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, 3809 + ... + 4118.

It is an arithmetic number, because the mean of its divisors is an integer number (190272).

2^1228685 is an apocalyptic number.

It is an amenable number.

1228685 is a deficient number, since it is larger than the sum of its proper divisors (293491).

1228685 is an equidigital number, since it uses as much as digits as its factorization.

1228685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7963.

The product of its digits is 7680, while the sum is 32.

The square root of 1228685 is about 1108.4606443172. The cubic root of 1228685 is about 107.1059305552.

The spelling of 1228685 in words is "one million, two hundred twenty-eight thousand, six hundred eighty-five".