13666051 has 12 divisors (see below), whose sum is σ = 16026120. Its totient is φ = 11618880.

The previous prime is 13666031. The next prime is 13666067. The reversal of 13666051 is 15066631.

13666051 = 85² + 86² + ... + 346².

It is not a de Polignac number, because 13666051 - 2⁵ = 13666019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13666021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5355 + ... + 7483.

It is an arithmetic number, because the mean of its divisors is an integer number (1335510).

Almost surely, 2^13666051 is an apocalyptic number.

13666051 is a deficient number, since it is larger than the sum of its proper divisors (2360069).

13666051 is a wasteful number, since it uses less digits than its factorization.

13666051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274 (or 2267 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 13666051 is about 3696.7622320079. The cubic root of 13666051 is about 239.0824397710.

The spelling of 13666051 in words is "thirteen million, six hundred sixty-six thousand, fifty-one".