13805069 has 8 divisors (see below), whose sum is σ = 14410872. Its totient is φ = 13212160.

The previous prime is 13805059. The next prime is 13805087. The reversal of 13805069 is 96050831.

It can be written as a sum of positive squares in 4 ways, for example, as 570025 + 13235044 = 755^2 + 3638^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13805069 - 2⁴ = 13805053 is a prime.

It is a super-2 number, since 2×13805069² = 381159860189522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13805009) 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, 1004 + ... + 5349.

It is an arithmetic number, because the mean of its divisors is an integer number (1801359).

Almost surely, 2^13805069 is an apocalyptic number.

It is an amenable number.

13805069 is a deficient number, since it is larger than the sum of its proper divisors (605803).

13805069 is an equidigital number, since it uses as much as digits as its factorization.

13805069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6447.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 13805069 is about 3715.5173260261. The cubic root of 13805069 is about 239.8903955547.

The spelling of 13805069 in words is "thirteen million, eight hundred five thousand, sixty-nine".