8846721 has 24 divisors (see below), whose sum is σ = 13942656. Its totient is φ = 5372640.

The previous prime is 8846713. The next prime is 8846729. The reversal of 8846721 is 1276488.

8846721 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8846713) and next prime (8846729).

It is not a de Polignac number, because 8846721 - 2³ = 8846713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8846729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9256 + ... + 10166.

It is an arithmetic number, because the mean of its divisors is an integer number (580944).

Almost surely, 2^8846721 is an apocalyptic number.

It is an amenable number.

8846721 is a deficient number, since it is larger than the sum of its proper divisors (5095935).

8846721 is a wasteful number, since it uses less digits than its factorization.

8846721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013 (or 1010 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 8846721 is about 2974.3437931752. The cubic root of 8846721 is about 206.8207507982.

It can be divided in two parts, 88467 and 21, that added together give a palindrome (88488).

The spelling of 8846721 in words is "eight million, eight hundred forty-six thousand, seven hundred twenty-one".