1122647 has 2 divisors, whose sum is σ = 1122648. Its totient is φ = 1122646.

The previous prime is 1122643. The next prime is 1122659. The reversal of 1122647 is 7462211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1122647 - 2² = 1122643 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561323 + 561324.

It is an arithmetic number, because the mean of its divisors is an integer number (561324).

2^1122647 is an apocalyptic number.

1122647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122647 is an equidigital number, since it uses as much as digits as its factorization.

1122647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 23.

The square root of 1122647 is about 1059.5503763389. The cubic root of 1122647 is about 103.9316303595.

Adding to 1122647 its reverse (7462211), we get a palindrome (8584858).

The spelling of 1122647 in words is "one million, one hundred twenty-two thousand, six hundred forty-seven".