8864821 has 8 divisors (see below), whose sum is σ = 10571904. Its totient is φ = 7267920.

The previous prime is 8864813. The next prime is 8864851. The reversal of 8864821 is 1284688.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8864821 - 2³ = 8864813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8864851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27370 + ... + 27691.

It is an arithmetic number, because the mean of its divisors is an integer number (1321488).

Almost surely, 2^8864821 is an apocalyptic number.

It is an amenable number.

8864821 is a deficient number, since it is larger than the sum of its proper divisors (1707083).

8864821 is a wasteful number, since it uses less digits than its factorization.

8864821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55091.

The product of its digits is 24576, while the sum is 37.

The square root of 8864821 is about 2977.3849264077. The cubic root of 8864821 is about 206.9617034180.

The spelling of 8864821 in words is "eight million, eight hundred sixty-four thousand, eight hundred twenty-one".