13285805 has 8 divisors (see below), whose sum is σ = 17169432. Its totient is φ = 9811008.

The previous prime is 13285793. The next prime is 13285817. The reversal of 13285805 is 50858231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13285793) and next prime (13285817).

It can be written as a sum of positive squares in 4 ways, for example, as 426409 + 12859396 = 653^2 + 3586^2 .

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 13285805 - 2¹⁶ = 13220269 is a prime.

It is a super-2 number, since 2×13285805² = 353025228996050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102134 + ... + 102263.

It is an arithmetic number, because the mean of its divisors is an integer number (2146179).

Almost surely, 2^13285805 is an apocalyptic number.

It is an amenable number.

13285805 is a deficient number, since it is larger than the sum of its proper divisors (3883627).

13285805 is a wasteful number, since it uses less digits than its factorization.

13285805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204415.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 13285805 is about 3644.9698215486. The cubic root of 13285805 is about 236.8441294997.

The spelling of 13285805 in words is "thirteen million, two hundred eighty-five thousand, eight hundred five".