8622621 has 48 divisors (see below), whose sum is σ = 15410304. Its totient is φ = 4534272.

The previous prime is 8622611. The next prime is 8622683. The reversal of 8622621 is 1262268.

It is not a de Polignac number, because 8622621 - 2²² = 4428317 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8622611) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88845 + ... + 88941.

It is an arithmetic number, because the mean of its divisors is an integer number (321048).

Almost surely, 2^8622621 is an apocalyptic number.

It is an amenable number.

8622621 is a deficient number, since it is larger than the sum of its proper divisors (6787683).

8622621 is a wasteful number, since it uses less digits than its factorization.

8622621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 207 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 8622621 is about 2936.4299753272. The cubic root of 8622621 is about 205.0594394366.

Adding to 8622621 its reverse (1262268), we get a palindrome (9884889).

The spelling of 8622621 in words is "eight million, six hundred twenty-two thousand, six hundred twenty-one".