13366445 has 4 divisors (see below), whose sum is σ = 16039740. Its totient is φ = 10693152.

The previous prime is 13366439. The next prime is 13366447. The reversal of 13366445 is 54466331.

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 10640644 + 2725801 = 3262^2 + 1651^2 .

It is a cyclic number.

It is not a de Polignac number, because 13366445 - 2¹⁶ = 13300909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13366447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1336640 + ... + 1336649.

It is an arithmetic number, because the mean of its divisors is an integer number (4009935).

Almost surely, 2^13366445 is an apocalyptic number.

It is an amenable number.

13366445 is a deficient number, since it is larger than the sum of its proper divisors (2673295).

13366445 is an equidigital number, since it uses as much as digits as its factorization.

13366445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673294.

The product of its digits is 25920, while the sum is 32.

The square root of 13366445 is about 3656.0149069718. The cubic root of 13366445 is about 237.3223491441.

The spelling of 13366445 in words is "thirteen million, three hundred sixty-six thousand, four hundred forty-five".