13066699 has 4 divisors (see below), whose sum is σ = 13754440. Its totient is φ = 12378960.

The previous prime is 13066657. The next prime is 13066709. The reversal of 13066699 is 99666031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99666031 = 1013 ⋅98387.

It is a cyclic number.

It is not a de Polignac number, because 13066699 - 2¹⁷ = 12935627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13066609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343842 + ... + 343879.

It is an arithmetic number, because the mean of its divisors is an integer number (3438610).

Almost surely, 2^13066699 is an apocalyptic number.

13066699 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13066699 is a deficient number, since it is larger than the sum of its proper divisors (687741).

13066699 is an equidigital number, since it uses as much as digits as its factorization.

13066699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687740.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 13066699 is about 3614.7889288311. The cubic root of 13066699 is about 235.5349154795.

The spelling of 13066699 in words is "thirteen million, sixty-six thousand, six hundred ninety-nine".