8536821 has 8 divisors (see below), whose sum is σ = 11418144. Its totient is φ = 5673360.

The previous prime is 8536807. The next prime is 8536831. The reversal of 8536821 is 1286358.

It is a happy number.

8536821 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 not a de Polignac number, because 8536821 - 2¹⁴ = 8520437 is a prime.

8536821 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8536831) 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, 3306 + ... + 5291.

It is an arithmetic number, because the mean of its divisors is an integer number (1427268).

Almost surely, 2^8536821 is an apocalyptic number.

It is an amenable number.

8536821 is a deficient number, since it is larger than the sum of its proper divisors (2881323).

8536821 is a wasteful number, since it uses less digits than its factorization.

8536821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8931.

The product of its digits is 11520, while the sum is 33.

The square root of 8536821 is about 2921.7838729105. The cubic root of 8536821 is about 204.3770180949.

The spelling of 8536821 in words is "eight million, five hundred thirty-six thousand, eight hundred twenty-one".