10816987 has 4 divisors (see below), whose sum is σ = 11109376. Its totient is φ = 10524600.

The previous prime is 10816961. The next prime is 10816997. The reversal of 10816987 is 78961801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10816987 - 2²³ = 2428379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10816937) 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 3 ways as a sum of consecutive naturals, for example, 146139 + ... + 146212.

It is an arithmetic number, because the mean of its divisors is an integer number (2777344).

Almost surely, 2^10816987 is an apocalyptic number.

10816987 is a deficient number, since it is larger than the sum of its proper divisors (292389).

10816987 is an equidigital number, since it uses as much as digits as its factorization.

10816987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292388.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 10816987 is about 3288.9188193083. The cubic root of 10816987 is about 221.1577192912.

It can be divided in two parts, 1081698 and 7, that multiplied together give a triangular number (7571886 = T₃₈₉₁).

The spelling of 10816987 in words is "ten million, eight hundred sixteen thousand, nine hundred eighty-seven".