12699887 has 8 divisors (see below), whose sum is σ = 13340256. Its totient is φ = 12066912.

The previous prime is 12699877. The next prime is 12699899. The reversal of 12699887 is 78899621.

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 12699887 - 2¹⁰ = 12698863 is a prime.

It is a super-2 number, since 2×12699887² = 322574259625538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12699857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853 + ... + 5369.

It is an arithmetic number, because the mean of its divisors is an integer number (1667532).

Almost surely, 2^12699887 is an apocalyptic number.

12699887 is a deficient number, since it is larger than the sum of its proper divisors (640369).

12699887 is a wasteful number, since it uses less digits than its factorization.

12699887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3697.

The product of its digits is 435456, while the sum is 50.

The square root of 12699887 is about 3563.6900819235. The cubic root of 12699887 is about 233.3099634191.

The spelling of 12699887 in words is "twelve million, six hundred ninety-nine thousand, eight hundred eighty-seven".