13983605 has 8 divisors (see below), whose sum is σ = 17767512. Its totient is φ = 10528768.

The previous prime is 13983587. The next prime is 13983647. The reversal of 13983605 is 50638931.

It can be written as a sum of positive squares in 4 ways, for example, as 857476 + 13126129 = 926^2 + 3623^2 .

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 13983605 - 2¹⁴ = 13967221 is a prime.

It is a Duffinian number.

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, 82172 + ... + 82341.

It is an arithmetic number, because the mean of its divisors is an integer number (2220939).

Almost surely, 2^13983605 is an apocalyptic number.

It is an amenable number.

13983605 is a deficient number, since it is larger than the sum of its proper divisors (3783907).

13983605 is a wasteful number, since it uses less digits than its factorization.

13983605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164535.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 13983605 is about 3739.4658709500. The cubic root of 13983605 is about 240.9201080434.

The spelling of 13983605 in words is "thirteen million, nine hundred eighty-three thousand, six hundred five".