13520669 has 8 divisors (see below), whose sum is σ = 13712160. Its totient is φ = 13330800.

The previous prime is 13520659. The next prime is 13520677. The reversal of 13520669 is 96602531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13520669 - 2⁴ = 13520653 is a prime.

It is a super-2 number, since 2×13520669² = 365616980415122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29099 + ... + 29559.

It is an arithmetic number, because the mean of its divisors is an integer number (1714020).

Almost surely, 2^13520669 is an apocalyptic number.

It is an amenable number.

13520669 is a deficient number, since it is larger than the sum of its proper divisors (191491).

13520669 is a wasteful number, since it uses less digits than its factorization.

13520669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 13520669 is about 3677.0462330517. The cubic root of 13520669 is about 238.2316143216.

The spelling of 13520669 in words is "thirteen million, five hundred twenty thousand, six hundred sixty-nine".