13705817 has 8 divisors (see below), whose sum is σ = 13917120. Its totient is φ = 13496400.

The previous prime is 13705807. The next prime is 13705829. The reversal of 13705817 is 71850731.

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 13705817 - 2⁶ = 13705753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13705807) 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, 20663 + ... + 21315.

It is an arithmetic number, because the mean of its divisors is an integer number (1739640).

Almost surely, 2^13705817 is an apocalyptic number.

It is an amenable number.

13705817 is a deficient number, since it is larger than the sum of its proper divisors (211303).

13705817 is a wasteful number, since it uses less digits than its factorization.

13705817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 13705817 is about 3702.1368154081. The cubic root of 13705817 is about 239.3141122944.

The spelling of 13705817 in words is "thirteen million, seven hundred five thousand, eight hundred seventeen".