10996781 has 2 divisors, whose sum is σ = 10996782. Its totient is φ = 10996780.

The previous prime is 10996759. The next prime is 10996787. The reversal of 10996781 is 18769901.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10562500 + 434281 = 3250^2 + 659^2 .

It is an emirp because it is prime and its reverse (18769901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10996781 is a prime.

It is a super-2 number, since 2×10996781² = 241858384723922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10996787) 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 as a sum of consecutive naturals, namely, 5498390 + 5498391.

It is an arithmetic number, because the mean of its divisors is an integer number (5498391).

Almost surely, 2^10996781 is an apocalyptic number.

It is an amenable number.

10996781 is a deficient number, since it is larger than the sum of its proper divisors (1).

10996781 is an equidigital number, since it uses as much as digits as its factorization.

10996781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 10996781 is about 3316.1394723383. The cubic root of 10996781 is about 222.3763130256.

The spelling of 10996781 in words is "ten million, nine hundred ninety-six thousand, seven hundred eighty-one".