864205271 has 8 divisors (see below), whose sum is σ = 887602320. Its totient is φ = 840958272.

The previous prime is 864205267. The next prime is 864205327. The reversal of 864205271 is 172502468.

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

It is a cyclic number.

It is not a de Polignac number, because 864205271 - 2² = 864205267 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 (864205211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25790 + ... + 48923.

It is an arithmetic number, because the mean of its divisors is an integer number (110950290).

Almost surely, 2^864205271 is an apocalyptic number.

864205271 is a deficient number, since it is larger than the sum of its proper divisors (23397049).

864205271 is a wasteful number, since it uses less digits than its factorization.

864205271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75025.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 864205271 is about 29397.3684366475. The cubic root of 864205271 is about 952.5160528475.

The spelling of 864205271 in words is "eight hundred sixty-four million, two hundred five thousand, two hundred seventy-one".