13552666 has 4 divisors (see below), whose sum is σ = 20329002. Its totient is φ = 6776332.

The previous prime is 13552633. The next prime is 13552691. The reversal of 13552666 is 66625531.

13552666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7177041 + 6375625 = 2679^2 + 2525^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3388165 + ... + 3388168.

Almost surely, 2^13552666 is an apocalyptic number.

13552666 is a deficient number, since it is larger than the sum of its proper divisors (6776336).

13552666 is an equidigital number, since it uses as much as digits as its factorization.

13552666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776335.

The product of its digits is 32400, while the sum is 34.

The square root of 13552666 is about 3681.3945727129. The cubic root of 13552666 is about 238.4193932882.

The spelling of 13552666 in words is "thirteen million, five hundred fifty-two thousand, six hundred sixty-six".