1222767 has 24 divisors (see below), whose sum is σ = 2175264. Its totient is φ = 644544.

The previous prime is 1222757. The next prime is 1222769. The reversal of 1222767 is 7672221.

It is not a de Polignac number, because 1222767 - 2⁴ = 1222751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222769) 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 23 ways as a sum of consecutive naturals, for example, 73 + ... + 1565.

It is an arithmetic number, because the mean of its divisors is an integer number (90636).

2^1222767 is an apocalyptic number.

1222767 is a deficient number, since it is larger than the sum of its proper divisors (952497).

1222767 is a wasteful number, since it uses less digits than its factorization.

1222767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1516 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 1222767 is about 1105.7879543565. The cubic root of 1222767 is about 106.9336940350.

Adding to 1222767 its reverse (7672221), we get a palindrome (8894988).

The spelling of 1222767 in words is "one million, two hundred twenty-two thousand, seven hundred sixty-seven".