13409687 has 8 divisors (see below), whose sum is σ = 14602800. Its totient is φ = 12265344.

The previous prime is 13409681. The next prime is 13409717. The reversal of 13409687 is 78690431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13409687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13409687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13409681) 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, 11618 + ... + 12719.

It is an arithmetic number, because the mean of its divisors is an integer number (1825350).

Almost surely, 2^13409687 is an apocalyptic number.

13409687 is a deficient number, since it is larger than the sum of its proper divisors (1193113).

13409687 is a wasteful number, since it uses less digits than its factorization.

13409687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24385.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 13409687 is about 3661.9239478722. The cubic root of 13409687 is about 237.5779954360.

The spelling of 13409687 in words is "thirteen million, four hundred nine thousand, six hundred eighty-seven".