8867217621 has 8 divisors (see below), whose sum is σ = 11845564960. Its totient is φ = 5900174352.

The previous prime is 8867217613. The next prime is 8867217659. The reversal of 8867217621 is 1267127688.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8867217621 - 2³ = 8867217613 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 (8867217421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2824186 + ... + 2827323.

It is an arithmetic number, because the mean of its divisors is an integer number (1480695620).

Almost surely, 2^8867217621 is an apocalyptic number.

It is an amenable number.

8867217621 is a deficient number, since it is larger than the sum of its proper divisors (2978347339).

8867217621 is a wasteful number, since it uses less digits than its factorization.

8867217621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652035.

The product of its digits is 451584, while the sum is 48.

The square root of 8867217621 is about 94165.9047691892. The cubic root of 8867217621 is about 2069.8035256590.

The spelling of 8867217621 in words is "eight billion, eight hundred sixty-seven million, two hundred seventeen thousand, six hundred twenty-one".