13650869 has 4 divisors (see below), whose sum is σ = 13694796. Its totient is φ = 13606944.

The previous prime is 13650829. The next prime is 13650883. The reversal of 13650869 is 96805631.

13650869 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 2 ways, for example, as 3960100 + 9690769 = 1990^2 + 3113^2 .

It is a cyclic number.

It is not a de Polignac number, because 13650869 - 2⁸ = 13650613 is a prime.

It is a super-2 number, since 2×13650869² = 372692448910322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13650809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21494 + ... + 22119.

It is an arithmetic number, because the mean of its divisors is an integer number (3423699).

Almost surely, 2^13650869 is an apocalyptic number.

It is an amenable number.

13650869 is a deficient number, since it is larger than the sum of its proper divisors (43927).

13650869 is an equidigital number, since it uses as much as digits as its factorization.

13650869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43926.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 13650869 is about 3694.7082428793. The cubic root of 13650869 is about 238.9938724992.

The spelling of 13650869 in words is "thirteen million, six hundred fifty thousand, eight hundred sixty-nine".