864554621 has 8 divisors (see below), whose sum is σ = 989567040. Its totient is φ = 739918368.

The previous prime is 864554609. The next prime is 864554651. The reversal of 864554621 is 126455468.

864554621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 864554621 - 2⁶ = 864554557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864554651) 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, 89096 + ... + 98321.

It is an arithmetic number, because the mean of its divisors is an integer number (123695880).

Almost surely, 2^864554621 is an apocalyptic number.

It is an amenable number.

864554621 is a deficient number, since it is larger than the sum of its proper divisors (125012419).

864554621 is a wasteful number, since it uses less digits than its factorization.

864554621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188083.

The product of its digits is 230400, while the sum is 41.

The square root of 864554621 is about 29403.3096946585. The cubic root of 864554621 is about 952.6443852647.

The spelling of 864554621 in words is "eight hundred sixty-four million, five hundred fifty-four thousand, six hundred twenty-one".