8675820021 has 8 divisors (see below), whose sum is σ = 12619374624. Its totient is φ = 5258072720.

The previous prime is 8675820019. The next prime is 8675820029. The reversal of 8675820021 is 1200285768.

8675820021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8675820021 - 2¹ = 8675820019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8675820029) 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, 131451786 + ... + 131451851.

It is an arithmetic number, because the mean of its divisors is an integer number (1577421828).

Almost surely, 2^8675820021 is an apocalyptic number.

It is an amenable number.

8675820021 is a deficient number, since it is larger than the sum of its proper divisors (3943554603).

8675820021 is a wasteful number, since it uses less digits than its factorization.

8675820021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262903651.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 8675820021 is about 93144.0820503375. The cubic root of 8675820021 is about 2054.8029379887.

The spelling of 8675820021 in words is "eight billion, six hundred seventy-five million, eight hundred twenty thousand, twenty-one".