13696987 has 2 divisors, whose sum is σ = 13696988. Its totient is φ = 13696986.

The previous prime is 13696973. The next prime is 13696997. The reversal of 13696987 is 78969631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13696987 - 2¹⁵ = 13664219 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13696987.

It is not a weakly prime, because it can be changed into another prime (13696997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6848493 + 6848494.

It is an arithmetic number, because the mean of its divisors is an integer number (6848494).

Almost surely, 2^13696987 is an apocalyptic number.

13696987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13696987 is an equidigital number, since it uses as much as digits as its factorization.

13696987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 13696987 is about 3700.9440687479. The cubic root of 13696987 is about 239.2627083887.

The spelling of 13696987 in words is "thirteen million, six hundred ninety-six thousand, nine hundred eighty-seven".