13664073 has 16 divisors (see below), whose sum is σ = 19469376. Its totient is φ = 8494080.

The previous prime is 13664071. The next prime is 13664129. The reversal of 13664073 is 37046631.

It is not a de Polignac number, because 13664073 - 2¹ = 13664071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13664073.

It is not an unprimeable number, because it can be changed into a prime (13664071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4578 + ... + 6948.

It is an arithmetic number, because the mean of its divisors is an integer number (1216836).

Almost surely, 2^13664073 is an apocalyptic number.

It is an amenable number.

13664073 is a deficient number, since it is larger than the sum of its proper divisors (5805303).

13664073 is a wasteful number, since it uses less digits than its factorization.

13664073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 13664073 is about 3696.4946909200. The cubic root of 13664073 is about 239.0709044249.

The spelling of 13664073 in words is "thirteen million, six hundred sixty-four thousand, seventy-three".