10691887 has 2 divisors, whose sum is σ = 10691888. Its totient is φ = 10691886.

The previous prime is 10691881. The next prime is 10691893. The reversal of 10691887 is 78819601.

10691887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (10691881) and next prime (10691893).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10691887 is a prime.

It is a super-2 number, since 2×10691887² = 228632895241538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10691881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5345943 + 5345944.

It is an arithmetic number, because the mean of its divisors is an integer number (5345944).

Almost surely, 2^10691887 is an apocalyptic number.

10691887 is a deficient number, since it is larger than the sum of its proper divisors (1).

10691887 is an equidigital number, since it uses as much as digits as its factorization.

10691887 is an evil number, because the sum of its binary digits is even.

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

The square root of 10691887 is about 3269.8451033650. The cubic root of 10691887 is about 220.3018377584.

The spelling of 10691887 in words is "ten million, six hundred ninety-one thousand, eight hundred eighty-seven".