10878781 has 2 divisors, whose sum is σ = 10878782. Its totient is φ = 10878780.

The previous prime is 10878739. The next prime is 10878809. The reversal of 10878781 is 18787801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7474756 + 3404025 = 2734^2 + 1845^2 .

It is an emirp because it is prime and its reverse (18787801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10878781 - 2¹⁵ = 10846013 is a prime.

It is a super-2 number, since 2×10878781² = 236695752091922, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 10878781 parts by 4664 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10878731) 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, 5439390 + 5439391.

It is an arithmetic number, because the mean of its divisors is an integer number (5439391).

Almost surely, 2^10878781 is an apocalyptic number.

It is an amenable number.

10878781 is a deficient number, since it is larger than the sum of its proper divisors (1).

10878781 is an equidigital number, since it uses as much as digits as its factorization.

10878781 is an odious number, because the sum of its binary digits is odd.

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

The square root of 10878781 is about 3298.2997134888. The cubic root of 10878781 is about 221.5780544177.

The spelling of 10878781 in words is "ten million, eight hundred seventy-eight thousand, seven hundred eighty-one".