862667 has 4 divisors (see below), whose sum is σ = 929040. Its totient is φ = 796296.

The previous prime is 862651. The next prime is 862669. The reversal of 862667 is 766268.

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 862667 - 2⁴ = 862651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (862669) 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, 33167 + ... + 33192.

It is an arithmetic number, because the mean of its divisors is an integer number (232260).

2⁸⁶²⁶⁶⁷ is an apocalyptic number.

862667 is a deficient number, since it is larger than the sum of its proper divisors (66373).

862667 is a wasteful number, since it uses less digits than its factorization.

862667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66372.

The product of its digits is 24192, while the sum is 35.

The square root of 862667 is about 928.7986864762. The cubic root of 862667 is about 95.1950562953.

The spelling of 862667 in words is "eight hundred sixty-two thousand, six hundred sixty-seven".