13697887 has 8 divisors (see below), whose sum is σ = 15706656. Its totient is φ = 11702112.

The previous prime is 13697833. The next prime is 13697891. The reversal of 13697887 is 78879631.

13697887 is digitally balanced in base 2 and base 8, because in such bases 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 13697887 - 2¹¹ = 13695839 is a prime.

13697887 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 13697887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13697587) 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, 868 + ... + 5305.

It is an arithmetic number, because the mean of its divisors is an integer number (1963332).

Almost surely, 2^13697887 is an apocalyptic number.

13697887 is a deficient number, since it is larger than the sum of its proper divisors (2008769).

13697887 is an equidigital number, since it uses as much as digits as its factorization.

13697887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6497.

The product of its digits is 508032, while the sum is 49.

The square root of 13697887 is about 3701.0656573479. The cubic root of 13697887 is about 239.2679487558.

The spelling of 13697887 in words is "thirteen million, six hundred ninety-seven thousand, eight hundred eighty-seven".