13670605 has 8 divisors (see below), whose sum is σ = 17666712. Its totient is φ = 10095168.

The previous prime is 13670599. The next prime is 13670609. The reversal of 13670605 is 50607631.

It can be written as a sum of positive squares in 4 ways, for example, as 522729 + 13147876 = 723^2 + 3626^2 .

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 13670605 - 2⁹ = 13670093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13670609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105094 + ... + 105223.

It is an arithmetic number, because the mean of its divisors is an integer number (2208339).

Almost surely, 2^13670605 is an apocalyptic number.

It is an amenable number.

13670605 is a deficient number, since it is larger than the sum of its proper divisors (3996107).

13670605 is a wasteful number, since it uses less digits than its factorization.

13670605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210335.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 13670605 is about 3697.3781251043. The cubic root of 13670605 is about 239.1089936627.

The spelling of 13670605 in words is "thirteen million, six hundred seventy thousand, six hundred five".