13489666 has 8 divisors (see below), whose sum is σ = 20616444. Its totient is φ = 6617520.

The previous prime is 13489657. The next prime is 13489667. The reversal of 13489666 is 66698431.

It can be written as a sum of positive squares in 2 ways, for example, as 12215025 + 1274641 = 3495^2 + 1129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13489667) 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 3 ways as a sum of consecutive naturals, for example, 63525 + ... + 63736.

Almost surely, 2^13489666 is an apocalyptic number.

13489666 is a deficient number, since it is larger than the sum of its proper divisors (7126778).

13489666 is a wasteful number, since it uses less digits than its factorization.

13489666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127316.

The product of its digits is 186624, while the sum is 43.

The square root of 13489666 is about 3672.8280656736. The cubic root of 13489666 is about 238.0493859806.

The spelling of 13489666 in words is "thirteen million, four hundred eighty-nine thousand, six hundred sixty-six".