862213881 has 16 divisors (see below), whose sum is σ = 1188965888. Its totient is φ = 555206400.

The previous prime is 862213801. The next prime is 862213883. The reversal of 862213881 is 188312268.

It is not a de Polignac number, because 862213881 - 2⁷ = 862213753 is a prime.

It is a super-2 number, since 2×862213881² = 1486825553178164322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (862213883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41745 + ... + 58881.

It is an arithmetic number, because the mean of its divisors is an integer number (74310368).

Almost surely, 2^862213881 is an apocalyptic number.

It is an amenable number.

862213881 is a deficient number, since it is larger than the sum of its proper divisors (326752007).

862213881 is a wasteful number, since it uses less digits than its factorization.

862213881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17712.

The product of its digits is 36864, while the sum is 39.

The square root of 862213881 is about 29363.4786937788. The cubic root of 862213881 is about 951.7838619235.

The spelling of 862213881 in words is "eight hundred sixty-two million, two hundred thirteen thousand, eight hundred eighty-one".