13669645 has 32 divisors (see below), whose sum is σ = 19169280. Its totient is φ = 9253440.

The previous prime is 13669639. The next prime is 13669661. The reversal of 13669645 is 54696631.

It is not a de Polignac number, because 13669645 - 2⁷ = 13669517 is a prime.

It is a super-3 number, since 3×13669645³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13669598 and 13669607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107572 + ... + 107698.

It is an arithmetic number, because the mean of its divisors is an integer number (599040).

Almost surely, 2^13669645 is an apocalyptic number.

It is an amenable number.

13669645 is a deficient number, since it is larger than the sum of its proper divisors (5499635).

13669645 is a wasteful number, since it uses less digits than its factorization.

13669645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265.

The product of its digits is 116640, while the sum is 40.

The square root of 13669645 is about 3697.2483011018. The cubic root of 13669645 is about 239.1033964950.

It can be divided in two parts, 1366 and 9645, that added together give a palindrome (11011).

The spelling of 13669645 in words is "thirteen million, six hundred sixty-nine thousand, six hundred forty-five".