862271 has 4 divisors (see below), whose sum is σ = 883344. Its totient is φ = 841200.

The previous prime is 862261. The next prime is 862273. The reversal of 862271 is 172268.

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

It is a cyclic number.

It is not a de Polignac number, because 862271 - 2⁶ = 862207 is a prime.

It is a super-2 number, since 2×862271² = 1487022554882, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 862271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10475 + ... + 10556.

It is an arithmetic number, because the mean of its divisors is an integer number (220836).

2⁸⁶²²⁷¹ is an apocalyptic number.

862271 is a deficient number, since it is larger than the sum of its proper divisors (21073).

862271 is a wasteful number, since it uses less digits than its factorization.

862271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21072.

The product of its digits is 1344, while the sum is 26.

The square root of 862271 is about 928.5854834101. The cubic root of 862271 is about 95.1804879037.

The spelling of 862271 in words is "eight hundred sixty-two thousand, two hundred seventy-one".