1226811 has 8 divisors (see below), whose sum is σ = 1721920. Its totient is φ = 774792.

The previous prime is 1226807. The next prime is 1226821. The reversal of 1226811 is 1186221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1226811 - 2² = 1226807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226801) 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 7 ways as a sum of consecutive naturals, for example, 10705 + ... + 10818.

It is an arithmetic number, because the mean of its divisors is an integer number (215240).

2^1226811 is an apocalyptic number.

1226811 is a deficient number, since it is larger than the sum of its proper divisors (495109).

1226811 is a wasteful number, since it uses less digits than its factorization.

1226811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21545.

The product of its digits is 192, while the sum is 21.

The square root of 1226811 is about 1107.6150053155. The cubic root of 1226811 is about 107.0514499126.

The spelling of 1226811 in words is "one million, two hundred twenty-six thousand, eight hundred eleven".