13690805 has 8 divisors (see below), whose sum is σ = 16548000. Its totient is φ = 10873296.

The previous prime is 13690793. The next prime is 13690823. The reversal of 13690805 is 50809631.

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 13690805 - 2⁸ = 13690549 is a prime.

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, 9155 + ... + 10544.

It is an arithmetic number, because the mean of its divisors is an integer number (2068500).

Almost surely, 2^13690805 is an apocalyptic number.

It is an amenable number.

13690805 is a deficient number, since it is larger than the sum of its proper divisors (2857195).

13690805 is a wasteful number, since it uses less digits than its factorization.

13690805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19843.

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

The square root of 13690805 is about 3700.1087821847. The cubic root of 13690805 is about 239.2267066839.

The spelling of 13690805 in words is "thirteen million, six hundred ninety thousand, eight hundred five".