862881 has 8 divisors (see below), whose sum is σ = 1177440. Its totient is φ = 561792.

The previous prime is 862879. The next prime is 862907. The reversal of 862881 is 188268.

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

It is not a de Polignac number, because 862881 - 2¹ = 862879 is a prime.

It is a super-2 number, since 2×862881² = 1489127240322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (862811) 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, 3216 + ... + 3473.

It is an arithmetic number, because the mean of its divisors is an integer number (147180).

2⁸⁶²⁸⁸¹ is an apocalyptic number.

It is an amenable number.

862881 is a deficient number, since it is larger than the sum of its proper divisors (314559).

862881 is a wasteful number, since it uses less digits than its factorization.

862881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6735.

The product of its digits is 6144, while the sum is 33.

The square root of 862881 is about 928.9138819073. The cubic root of 862881 is about 95.2029272574.

The spelling of 862881 in words is "eight hundred sixty-two thousand, eight hundred eighty-one".