13697687 has 2 divisors, whose sum is σ = 13697688. Its totient is φ = 13697686.

The previous prime is 13697653. The next prime is 13697701. The reversal of 13697687 is 78679631.

It is a strong prime.

It is an emirp because it is prime and its reverse (78679631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13697687 - 2⁶ = 13697623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13697587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6848843 + 6848844.

It is an arithmetic number, because the mean of its divisors is an integer number (6848844).

Almost surely, 2^13697687 is an apocalyptic number.

13697687 is a deficient number, since it is larger than the sum of its proper divisors (1).

13697687 is an equidigital number, since it uses as much as digits as its factorization.

13697687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 13697687 is about 3701.0386380042. The cubic root of 13697687 is about 239.2667842496.

The spelling of 13697687 in words is "thirteen million, six hundred ninety-seven thousand, six hundred eighty-seven".