8721853 has 24 divisors (see below), whose sum is σ = 10834560. Its totient is φ = 6985440.

The previous prime is 8721851. The next prime is 8721877. The reversal of 8721853 is 3581278.

8721853 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8721853 - 2¹ = 8721851 is a prime.

It is a Duffinian number.

Its product of digits (13440) is a multiple of the sum of its prime divisors (210).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8721851) 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, 79963 + ... + 80071.

It is an arithmetic number, because the mean of its divisors is an integer number (451440).

Almost surely, 2^8721853 is an apocalyptic number.

It is an amenable number.

8721853 is a deficient number, since it is larger than the sum of its proper divisors (2112707).

8721853 is a wasteful number, since it uses less digits than its factorization.

8721853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 210 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 8721853 is about 2953.2783478704. The cubic root of 8721853 is about 205.8430718000.

The spelling of 8721853 in words is "eight million, seven hundred twenty-one thousand, eight hundred fifty-three".