10986721 has 2 divisors, whose sum is σ = 10986722. Its totient is φ = 10986720.

The previous prime is 10986691. The next prime is 10986739. The reversal of 10986721 is 12768901.

It is a happy number.

10986721 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 can be written as a sum of positive squares in only one way, i.e., 10890000 + 96721 = 3300^2 + 311^2 .

It is an emirp because it is prime and its reverse (12768901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10986721 is a prime.

It is not a weakly prime, because it can be changed into another prime (10986751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5493360 + 5493361.

It is an arithmetic number, because the mean of its divisors is an integer number (5493361).

Almost surely, 2^10986721 is an apocalyptic number.

It is an amenable number.

10986721 is a deficient number, since it is larger than the sum of its proper divisors (1).

10986721 is an equidigital number, since it uses as much as digits as its factorization.

10986721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 10986721 is about 3314.6223012585. The cubic root of 10986721 is about 222.3084814109.

The spelling of 10986721 in words is "ten million, nine hundred eighty-six thousand, seven hundred twenty-one".