8268621 has 4 divisors (see below), whose sum is σ = 11024832. Its totient is φ = 5512412.

The previous prime is 8268619. The next prime is 8268641. The reversal of 8268621 is 1268628.

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 8268621 - 2¹ = 8268619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8268641) 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, 1378101 + ... + 1378106.

It is an arithmetic number, because the mean of its divisors is an integer number (2756208).

Almost surely, 2^8268621 is an apocalyptic number.

It is an amenable number.

8268621 is a deficient number, since it is larger than the sum of its proper divisors (2756211).

8268621 is a wasteful number, since it uses less digits than its factorization.

8268621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756210.

The product of its digits is 9216, while the sum is 33.

The square root of 8268621 is about 2875.5209962718. The cubic root of 8268621 is about 202.2139108988.

The spelling of 8268621 in words is "eight million, two hundred sixty-eight thousand, six hundred twenty-one".