10677781 has 2 divisors, whose sum is σ = 10677782. Its totient is φ = 10677780.

The previous prime is 10677769. The next prime is 10677809. The reversal of 10677781 is 18777601.

10677781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 11025 = 3266^2 + 105^2 .

It is an emirp because it is prime and its reverse (18777601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10677781 - 2⁹ = 10677269 is a prime.

It is a super-2 number, since 2×10677781² = 228030014167922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10677781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10677721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5338890 + 5338891.

It is an arithmetic number, because the mean of its divisors is an integer number (5338891).

Almost surely, 2^10677781 is an apocalyptic number.

It is an amenable number.

10677781 is a deficient number, since it is larger than the sum of its proper divisors (1).

10677781 is an equidigital number, since it uses as much as digits as its factorization.

10677781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16464, while the sum is 37.

The square root of 10677781 is about 3267.6874085506. The cubic root of 10677781 is about 220.2049123870.

The spelling of 10677781 in words is "ten million, six hundred seventy-seven thousand, seven hundred eighty-one".