867992881 has 32 divisors (see below), whose sum is σ = 1049760000. Its totient is φ = 702062592.

The previous prime is 867992863. The next prime is 867992887. The reversal of 867992881 is 188299768.

867992881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-867992881 is a prime.

It is a super-2 number, since 2×867992881² = 1506823282933360322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (867992887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1932945 + ... + 1933393.

It is an arithmetic number, because the mean of its divisors is an integer number (32805000).

Almost surely, 2^867992881 is an apocalyptic number.

It is an amenable number.

867992881 is a deficient number, since it is larger than the sum of its proper divisors (181767119).

867992881 is a wasteful number, since it uses less digits than its factorization.

867992881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681.

The product of its digits is 3483648, while the sum is 58.

The square root of 867992881 is about 29461.7189077623. The cubic root of 867992881 is about 953.9055766825.

The spelling of 867992881 in words is "eight hundred sixty-seven million, nine hundred ninety-two thousand, eight hundred eighty-one".