13771687 has 8 divisors (see below), whose sum is σ = 14423904. Its totient is φ = 13123968.

The previous prime is 13771663. The next prime is 13771691. The reversal of 13771687 is 78617731.

13771687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13771687 - 2⁷ = 13771559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13771627) 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, 6243 + ... + 8155.

It is an arithmetic number, because the mean of its divisors is an integer number (1802988).

Almost surely, 2^13771687 is an apocalyptic number.

13771687 is a deficient number, since it is larger than the sum of its proper divisors (652217).

13771687 is a wasteful number, since it uses less digits than its factorization.

13771687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249.

The product of its digits is 49392, while the sum is 40.

The square root of 13771687 is about 3711.0223658717. The cubic root of 13771687 is about 239.6968800522.

It can be divided in two parts, 137 and 71687, that added together give a square (71824 = 268²).

The spelling of 13771687 in words is "thirteen million, seven hundred seventy-one thousand, six hundred eighty-seven".