8364521 has 4 divisors (see below), whose sum is σ = 9124944. Its totient is φ = 7604100.

The previous prime is 8364509. The next prime is 8364523. The reversal of 8364521 is 1254638.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8364521 - 2⁶ = 8364457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8364523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380195 + ... + 380216.

It is an arithmetic number, because the mean of its divisors is an integer number (2281236).

Almost surely, 2^8364521 is an apocalyptic number.

It is an amenable number.

8364521 is a deficient number, since it is larger than the sum of its proper divisors (760423).

8364521 is a wasteful number, since it uses less digits than its factorization.

8364521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760422.

The product of its digits is 5760, while the sum is 29.

The square root of 8364521 is about 2892.1481635629. The cubic root of 8364521 is about 202.9926712392.

The spelling of 8364521 in words is "eight million, three hundred sixty-four thousand, five hundred twenty-one".