871746065 has 4 divisors (see below), whose sum is σ = 1046095284. Its totient is φ = 697396848.

The previous prime is 871746053. The next prime is 871746089. The reversal of 871746065 is 560647178.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 399640081 + 472105984 = 19991^2 + 21728^2 .

It is a cyclic number.

It is not a de Polignac number, because 871746065 - 2¹⁰ = 871745041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87174602 + ... + 87174611.

It is an arithmetic number, because the mean of its divisors is an integer number (261523821).

Almost surely, 2^871746065 is an apocalyptic number.

It is an amenable number.

871746065 is a deficient number, since it is larger than the sum of its proper divisors (174349219).

871746065 is a wasteful number, since it uses less digits than its factorization.

871746065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174349218.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 871746065 is about 29525.3461453037. The cubic root of 871746065 is about 955.2784893614.

It can be divided in two parts, 87174 and 6065, that added together give a palindrome (93239).

The spelling of 871746065 in words is "eight hundred seventy-one million, seven hundred forty-six thousand, sixty-five".