864071 has 4 divisors (see below), whose sum is σ = 930552. Its totient is φ = 797592.

The previous prime is 864053. The next prime is 864077. The reversal of 864071 is 170468.

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 864071 - 2⁶ = 864007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 864071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864077) 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, 33221 + ... + 33246.

It is an arithmetic number, because the mean of its divisors is an integer number (232638).

2⁸⁶⁴⁰⁷¹ is an apocalyptic number.

864071 is a deficient number, since it is larger than the sum of its proper divisors (66481).

864071 is a wasteful number, since it uses less digits than its factorization.

864071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66480.

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

The square root of 864071 is about 929.5541942243. The cubic root of 864071 is about 95.2466719697.

The spelling of 864071 in words is "eight hundred sixty-four thousand, seventy-one".