864354881 has 16 divisors (see below), whose sum is σ = 980429184. Its totient is φ = 756015744.

The previous prime is 864354877. The next prime is 864354901. The reversal of 864354881 is 188453468.

It is a cyclic number.

It is not a de Polignac number, because 864354881 - 2² = 864354877 is a prime.

It is a super-2 number, since 2×864354881² = 1494218720617048322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864354871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18485 + ... + 45501.

It is an arithmetic number, because the mean of its divisors is an integer number (61276824).

Almost surely, 2^864354881 is an apocalyptic number.

It is an amenable number.

864354881 is a deficient number, since it is larger than the sum of its proper divisors (116074303).

864354881 is a wasteful number, since it uses less digits than its factorization.

864354881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27160.

The product of its digits is 737280, while the sum is 47.

The square root of 864354881 is about 29399.9129420480. The cubic root of 864354881 is about 952.5710157553.

The spelling of 864354881 in words is "eight hundred sixty-four million, three hundred fifty-four thousand, eight hundred eighty-one".