8282621 has 4 divisors (see below), whose sum is σ = 8769852. Its totient is φ = 7795392.

The previous prime is 8282581. The next prime is 8282623. The reversal of 8282621 is 1262828.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7778521 + 504100 = 2789^2 + 710^2 .

It is a cyclic number.

It is not a de Polignac number, because 8282621 - 2¹⁰ = 8281597 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 (8282623) 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, 243590 + ... + 243623.

It is an arithmetic number, because the mean of its divisors is an integer number (2192463).

Almost surely, 2^8282621 is an apocalyptic number.

It is an amenable number.

8282621 is a deficient number, since it is larger than the sum of its proper divisors (487231).

8282621 is a wasteful number, since it uses less digits than its factorization.

8282621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487230.

The product of its digits is 3072, while the sum is 29.

The square root of 8282621 is about 2877.9543081849. The cubic root of 8282621 is about 202.3279725821.

The spelling of 8282621 in words is "eight million, two hundred eighty-two thousand, six hundred twenty-one".