1122687 has 16 divisors (see below), whose sum is σ = 1703680. Its totient is φ = 730296.

The previous prime is 1122683. The next prime is 1122701. The reversal of 1122687 is 7862211.

It is not a de Polignac number, because 1122687 - 2² = 1122683 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1122687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122683) 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 15 ways as a sum of consecutive naturals, for example, 678 + ... + 1644.

It is an arithmetic number, because the mean of its divisors is an integer number (106480).

2^1122687 is an apocalyptic number.

1122687 is a deficient number, since it is larger than the sum of its proper divisors (580993).

1122687 is an equidigital number, since it uses as much as digits as its factorization.

1122687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019 (or 1013 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 1122687 is about 1059.5692521020. The cubic root of 1122687 is about 103.9328647088.

Adding to 1122687 its reverse (7862211), we get a palindrome (8984898).

The spelling of 1122687 in words is "one million, one hundred twenty-two thousand, six hundred eighty-seven".