8587404221 has 8 divisors (see below), whose sum is σ = 9368760864. Its totient is φ = 7806161520.

The previous prime is 8587404193. The next prime is 8587404229. The reversal of 8587404221 is 1224047858.

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 8587404221 - 2¹⁰ = 8587403197 is a prime.

It is a super-2 number, since 2×8587404221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8587404229) 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, 235595 + ... + 269591.

It is an arithmetic number, because the mean of its divisors is an integer number (1171095108).

Almost surely, 2^8587404221 is an apocalyptic number.

It is an amenable number.

8587404221 is a deficient number, since it is larger than the sum of its proper divisors (781356643).

8587404221 is a wasteful number, since it uses less digits than its factorization.

8587404221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56971.

The product of its (nonzero) digits is 143360, while the sum is 41.

The square root of 8587404221 is about 92668.2481813485. The cubic root of 8587404221 is about 2047.7988844314.

The spelling of 8587404221 in words is "eight billion, five hundred eighty-seven million, four hundred four thousand, two hundred twenty-one".