9066821 has 6 divisors (see below), whose sum is σ = 9391122. Its totient is φ = 8753360.

The previous prime is 9066809. The next prime is 9066877. The reversal of 9066821 is 1286609.

9066821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 829921 + 8236900 = 911^2 + 2870^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9066821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9066721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4550 + ... + 6231.

It is an arithmetic number, because the mean of its divisors is an integer number (1565187).

Almost surely, 2^9066821 is an apocalyptic number.

It is an amenable number.

9066821 is a deficient number, since it is larger than the sum of its proper divisors (324301).

9066821 is a wasteful number, since it uses less digits than its factorization.

9066821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10839 (or 10810 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 9066821 is about 3011.1162382080. The cubic root of 9066821 is about 208.5219034357.

The spelling of 9066821 in words is "nine million, sixty-six thousand, eight hundred twenty-one".