13670817 has 4 divisors (see below), whose sum is σ = 18227760. Its totient is φ = 9113876.

The previous prime is 13670801. The next prime is 13670821. The reversal of 13670817 is 71807631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13670817 - 2⁴ = 13670801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13670827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2278467 + ... + 2278472.

It is an arithmetic number, because the mean of its divisors is an integer number (4556940).

Almost surely, 2^13670817 is an apocalyptic number.

It is an amenable number.

13670817 is a deficient number, since it is larger than the sum of its proper divisors (4556943).

13670817 is an equidigital number, since it uses as much as digits as its factorization.

13670817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4556942.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 13670817 is about 3697.4067939571. The cubic root of 13670817 is about 239.1102296686.

The spelling of 13670817 in words is "thirteen million, six hundred seventy thousand, eight hundred seventeen".