8018621 has 8 divisors (see below), whose sum is σ = 8671320. Its totient is φ = 7371072.

The previous prime is 8018609. The next prime is 8018629. The reversal of 8018621 is 1268108.

8018621 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 4 ways, for example, as 240100 + 7778521 = 490^2 + 2789^2 .

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 8018621 - 2⁶ = 8018557 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 (8018629) 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, 2351 + ... + 4643.

It is an arithmetic number, because the mean of its divisors is an integer number (1083915).

Almost surely, 2^8018621 is an apocalyptic number.

It is an amenable number.

8018621 is a deficient number, since it is larger than the sum of its proper divisors (652699).

8018621 is a wasteful number, since it uses less digits than its factorization.

8018621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 8018621 is about 2831.7169703203. The cubic root of 8018621 is about 200.1550547590.

The spelling of 8018621 in words is "eight million, eighteen thousand, six hundred twenty-one".