864671 has 8 divisors (see below), whose sum is σ = 964080. Its totient is φ = 770688.

The previous prime is 864641. The next prime is 864673. The reversal of 864671 is 176468.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864673) 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, 1016 + ... + 1661.

It is an arithmetic number, because the mean of its divisors is an integer number (120510).

2⁸⁶⁴⁶⁷¹ is an apocalyptic number.

864671 is a deficient number, since it is larger than the sum of its proper divisors (99409).

864671 is a wasteful number, since it uses less digits than its factorization.

864671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713.

The product of its digits is 8064, while the sum is 32.

The square root of 864671 is about 929.8768735698. The cubic root of 864671 is about 95.2687128979.

It can be divided in two parts, 86467 and 1, that added together give a palindrome (86468).

The spelling of 864671 in words is "eight hundred sixty-four thousand, six hundred seventy-one".