10086721 has 4 divisors (see below), whose sum is σ = 10166272. Its totient is φ = 10007172.

The previous prime is 10086709. The next prime is 10086737. The reversal of 10086721 is 12768001.

10086721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10086721 - 2¹¹ = 10084673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10086761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39585 + ... + 39838.

It is an arithmetic number, because the mean of its divisors is an integer number (2541568).

Almost surely, 2^10086721 is an apocalyptic number.

It is an amenable number.

10086721 is a deficient number, since it is larger than the sum of its proper divisors (79551).

10086721 is an equidigital number, since it uses as much as digits as its factorization.

10086721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79550.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 10086721 is about 3175.9598549100. The cubic root of 10086721 is about 216.0644597855.

The spelling of 10086721 in words is "ten million, eighty-six thousand, seven hundred twenty-one".