13802666 has 8 divisors (see below), whose sum is σ = 21418020. Its totient is φ = 6663328.

The previous prime is 13802647. The next prime is 13802669. The reversal of 13802666 is 66620831.

13802666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12752041 + 1050625 = 3571^2 + 1025^2 .

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 (13802669) 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, 118931 + ... + 119046.

Almost surely, 2^13802666 is an apocalyptic number.

13802666 is a deficient number, since it is larger than the sum of its proper divisors (7615354).

13802666 is a wasteful number, since it uses less digits than its factorization.

13802666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238008.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 13802666 is about 3715.1939384102. The cubic root of 13802666 is about 239.8764757868.

The spelling of 13802666 in words is "thirteen million, eight hundred two thousand, six hundred sixty-six".