862381 has 4 divisors (see below), whose sum is σ = 928732. Its totient is φ = 796032.

The previous prime is 862369. The next prime is 862387. The reversal of 862381 is 183268.

862381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 275625 + 586756 = 525^2 + 766^2 .

It is a cyclic number.

It is not a de Polignac number, because 862381 - 2¹¹ = 860333 is a prime.

It is a super-2 number, since 2×862381² = 1487401978322, which contains 22 as substring.

It is a Duffinian number.

862381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33156 + ... + 33181.

It is an arithmetic number, because the mean of its divisors is an integer number (232183).

2⁸⁶²³⁸¹ is an apocalyptic number.

It is an amenable number.

862381 is a deficient number, since it is larger than the sum of its proper divisors (66351).

862381 is a wasteful number, since it uses less digits than its factorization.

862381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66350.

The product of its digits is 2304, while the sum is 28.

The square root of 862381 is about 928.6447113940. The cubic root of 862381 is about 95.1845351265.

The spelling of 862381 in words is "eight hundred sixty-two thousand, three hundred eighty-one".