8018321 has 4 divisors (see below), whose sum is σ = 8053872. Its totient is φ = 7982772.

The previous prime is 8018303. The next prime is 8018327. The reversal of 8018321 is 1238108.

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 8018321 - 2²² = 3824017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8018327) 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, 17435 + ... + 17888.

It is an arithmetic number, because the mean of its divisors is an integer number (2013468).

Almost surely, 2^8018321 is an apocalyptic number.

It is an amenable number.

8018321 is a deficient number, since it is larger than the sum of its proper divisors (35551).

8018321 is a wasteful number, since it uses less digits than its factorization.

8018321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35550.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 8018321 is about 2831.6639984292. The cubic root of 8018321 is about 200.1525585998.

The spelling of 8018321 in words is "eight million, eighteen thousand, three hundred twenty-one".