13540805 has 8 divisors (see below), whose sum is σ = 16272672. Its totient is φ = 10816848.

The previous prime is 13540801. The next prime is 13540817. The reversal of 13540805 is 50804531.

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 13540805 - 2² = 13540801 is a prime.

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 (13540801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2882 + ... + 5948.

It is an arithmetic number, because the mean of its divisors is an integer number (2034084).

Almost surely, 2^13540805 is an apocalyptic number.

It is an amenable number.

13540805 is a deficient number, since it is larger than the sum of its proper divisors (2731867).

13540805 is an equidigital number, since it uses as much as digits as its factorization.

13540805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3955.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 13540805 is about 3679.7832816621. The cubic root of 13540805 is about 238.3498198233.

The spelling of 13540805 in words is "thirteen million, five hundred forty thousand, eight hundred five".