865428171 has 8 divisors (see below), whose sum is σ = 1158502464. Its totient is φ = 574653000.

The previous prime is 865428127. The next prime is 865428203. The reversal of 865428171 is 171824568.

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

It is not a de Polignac number, because 865428171 - 2¹³ = 865419979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (865428101) 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, 573901 + ... + 575406.

It is an arithmetic number, because the mean of its divisors is an integer number (144812808).

Almost surely, 2^865428171 is an apocalyptic number.

865428171 is a deficient number, since it is larger than the sum of its proper divisors (293074293).

865428171 is a wasteful number, since it uses less digits than its factorization.

865428171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149561.

The product of its digits is 107520, while the sum is 42.

The square root of 865428171 is about 29418.1605645220. The cubic root of 865428171 is about 952.9651293640.

The spelling of 865428171 in words is "eight hundred sixty-five million, four hundred twenty-eight thousand, one hundred seventy-one".