13337666 has 4 divisors (see below), whose sum is σ = 20006502. Its totient is φ = 6668832.

The previous prime is 13337627. The next prime is 13337671. The reversal of 13337666 is 66673331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66673331 = 71 ⋅939061.

It can be written as a sum of positive squares in only one way, i.e., 11363641 + 1974025 = 3371^2 + 1405^2 .

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334415 + ... + 3334418.

Almost surely, 2^13337666 is an apocalyptic number.

13337666 is a deficient number, since it is larger than the sum of its proper divisors (6668836).

13337666 is an equidigital number, since it uses as much as digits as its factorization.

13337666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668835.

The product of its digits is 40824, while the sum is 35.

The square root of 13337666 is about 3652.0769433296. The cubic root of 13337666 is about 237.1519022395.

The spelling of 13337666 in words is "thirteen million, three hundred thirty-seven thousand, six hundred sixty-six".