862491 has 16 divisors (see below), whose sum is σ = 1336064. Its totient is φ = 484704.

The previous prime is 862487. The next prime is 862493. The reversal of 862491 is 194268.

862491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 862491 - 2² = 862487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (862493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1101 + ... + 1713.

It is an arithmetic number, because the mean of its divisors is an integer number (83504).

2⁸⁶²⁴⁹¹ is an apocalyptic number.

862491 is a deficient number, since it is larger than the sum of its proper divisors (473573).

862491 is a wasteful number, since it uses less digits than its factorization.

862491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690.

The product of its digits is 3456, while the sum is 30.

The square root of 862491 is about 928.7039356006. The cubic root of 862491 is about 95.1885820051.

The spelling of 862491 in words is "eight hundred sixty-two thousand, four hundred ninety-one".