10781887 has 2 divisors, whose sum is σ = 10781888. Its totient is φ = 10781886.

The previous prime is 10781867. The next prime is 10781891. The reversal of 10781887 is 78818701.

10781887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10781887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10781807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5390943 + 5390944.

It is an arithmetic number, because the mean of its divisors is an integer number (5390944).

Almost surely, 2^10781887 is an apocalyptic number.

10781887 is a deficient number, since it is larger than the sum of its proper divisors (1).

10781887 is an equidigital number, since it uses as much as digits as its factorization.

10781887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25088, while the sum is 40.

The square root of 10781887 is about 3283.5783834104. The cubic root of 10781887 is about 220.9182488043.

The spelling of 10781887 in words is "ten million, seven hundred eighty-one thousand, eight hundred eighty-seven".