864195487 has 8 divisors (see below), whose sum is σ = 910166400. Its totient is φ = 818273304.

The previous prime is 864195469. The next prime is 864195511. The reversal of 864195487 is 784591468.

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

It is not a de Polignac number, because 864195487 - 2⁷ = 864195359 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 (864195427) 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, 27588 + ... + 49894.

It is an arithmetic number, because the mean of its divisors is an integer number (113770800).

Almost surely, 2^864195487 is an apocalyptic number.

864195487 is a deficient number, since it is larger than the sum of its proper divisors (45970913).

864195487 is a wasteful number, since it uses less digits than its factorization.

864195487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24365.

The product of its digits is 1935360, while the sum is 52.

The square root of 864195487 is about 29397.2020267236. The cubic root of 864195487 is about 952.5124582338.

The spelling of 864195487 in words is "eight hundred sixty-four million, one hundred ninety-five thousand, four hundred eighty-seven".