13041665 has 16 divisors (see below), whose sum is σ = 19262208. Its totient is φ = 8254656.

The previous prime is 13041661. The next prime is 13041673. The reversal of 13041665 is 56614031.

It is a cyclic number.

It is not a de Polignac number, because 13041665 - 2² = 13041661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13041661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13877 + ... + 14786.

It is an arithmetic number, because the mean of its divisors is an integer number (1203888).

It is a Proth number, since it is equal to 199 ⋅ 2¹⁶ + 1 and 199 < 2¹⁶.

Almost surely, 2^13041665 is an apocalyptic number.

It is an amenable number.

13041665 is a deficient number, since it is larger than the sum of its proper divisors (6220543).

13041665 is a wasteful number, since it uses less digits than its factorization.

13041665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28688.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 13041665 is about 3611.3245492478. The cubic root of 13041665 is about 235.3844018051.

Adding to 13041665 its reverse (56614031), we get a palindrome (69655696).

The spelling of 13041665 in words is "thirteen million, forty-one thousand, six hundred sixty-five".