1226817 has 12 divisors (see below), whose sum is σ = 1782144. Its totient is φ = 813240.

The previous prime is 1226807. The next prime is 1226821. The reversal of 1226817 is 7186221.

It is not a de Polignac number, because 1226817 - 2⁴ = 1226801 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1226807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2188 + ... + 2690.

It is an arithmetic number, because the mean of its divisors is an integer number (148512).

2^1226817 is an apocalyptic number.

It is an amenable number.

1226817 is a deficient number, since it is larger than the sum of its proper divisors (555327).

1226817 is a wasteful number, since it uses less digits than its factorization.

1226817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 777 counting only the distinct ones).

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

The square root of 1226817 is about 1107.6177138345. The cubic root of 1226817 is about 107.0516244322.

The spelling of 1226817 in words is "one million, two hundred twenty-six thousand, eight hundred seventeen".