1226345 has 4 divisors (see below), whose sum is σ = 1471620. Its totient is φ = 981072.

The previous prime is 1226341. The next prime is 1226347. The reversal of 1226345 is 5436221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 781456 + 444889 = 884^2 + 667^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226345 - 2² = 1226341 is a prime.

It is a d-powerful number, because it can be written as 1 + 2⁵ + 2¹⁷ + 6⁶ + 3 + 4¹⁰ + 5 .

It is a self number, because there is not a number n which added to its sum of digits gives 1226345.

It is not an unprimeable number, because it can be changed into a prime (1226341) 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 3 ways as a sum of consecutive naturals, for example, 122630 + ... + 122639.

It is an arithmetic number, because the mean of its divisors is an integer number (367905).

2^1226345 is an apocalyptic number.

It is an amenable number.

1226345 is a deficient number, since it is larger than the sum of its proper divisors (245275).

1226345 is an equidigital number, since it uses as much as digits as its factorization.

1226345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245274.

The product of its digits is 1440, while the sum is 23.

The square root of 1226345 is about 1107.4046234326. The cubic root of 1226345 is about 107.0378938192.

The spelling of 1226345 in words is "one million, two hundred twenty-six thousand, three hundred forty-five".