8266621 has 8 divisors (see below), whose sum is σ = 9228384. Its totient is φ = 7339920.

The previous prime is 8266613. The next prime is 8266633. The reversal of 8266621 is 1266628.

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 8266621 - 2³ = 8266613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8261621) 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, 8266 + ... + 9211.

It is an arithmetic number, because the mean of its divisors is an integer number (1153548).

Almost surely, 2^8266621 is an apocalyptic number.

It is an amenable number.

8266621 is a deficient number, since it is larger than the sum of its proper divisors (961763).

8266621 is a wasteful number, since it uses less digits than its factorization.

8266621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17531.

The product of its digits is 6912, while the sum is 31.

The square root of 8266621 is about 2875.1732121735. The cubic root of 8266621 is about 202.1976058650.

It can be divided in two parts, 826 and 6621, that added together give a palindrome (7447).

The spelling of 8266621 in words is "eight million, two hundred sixty-six thousand, six hundred twenty-one".