1226667 has 16 divisors (see below), whose sum is σ = 1790208. Its totient is φ = 742560.

The previous prime is 1226663. The next prime is 1226677. The reversal of 1226667 is 7666221.

It is not a de Polignac number, because 1226667 - 2² = 1226663 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1226663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2548 + ... + 2990.

It is an arithmetic number, because the mean of its divisors is an integer number (111888).

2^1226667 is an apocalyptic number.

1226667 is a deficient number, since it is larger than the sum of its proper divisors (563541).

1226667 is a wasteful number, since it uses less digits than its factorization.

1226667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530.

The product of its digits is 6048, while the sum is 30.

The square root of 1226667 is about 1107.5499988714. The cubic root of 1226667 is about 107.0472612717.

The spelling of 1226667 in words is "one million, two hundred twenty-six thousand, six hundred sixty-seven".