1228687 has 8 divisors (see below), whose sum is σ = 1264640. Its totient is φ = 1193400.

The previous prime is 1228679. The next prime is 1228691. The reversal of 1228687 is 7868221.

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 1228687 - 2³ = 1228679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8062 + ... + 8212.

It is an arithmetic number, because the mean of its divisors is an integer number (158080).

2^1228687 is an apocalyptic number.

1228687 is a deficient number, since it is larger than the sum of its proper divisors (35953).

1228687 is a wasteful number, since it uses less digits than its factorization.

1228687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333.

The product of its digits is 10752, while the sum is 34.

The square root of 1228687 is about 1108.4615464688. The cubic root of 1228687 is about 107.1059886693.

The spelling of 1228687 in words is "one million, two hundred twenty-eight thousand, six hundred eighty-seven".