871594997 has 12 divisors (see below), whose sum is σ = 1091889036. Its totient is φ = 689613120.

The previous prime is 871594973. The next prime is 871595033. The reversal of 871594997 is 799495178.

It can be written as a sum of positive squares in 2 ways, for example, as 88378801 + 783216196 = 9401^2 + 27986^2 .

It is not a de Polignac number, because 871594997 - 2¹⁴ = 871578613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871594937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 683504 + ... + 684777.

It is an arithmetic number, because the mean of its divisors is an integer number (90990753).

Almost surely, 2^871594997 is an apocalyptic number.

It is an amenable number.

871594997 is a deficient number, since it is larger than the sum of its proper divisors (220294039).

871594997 is a wasteful number, since it uses less digits than its factorization.

871594997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368308 (or 1368301 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 59.

The square root of 871594997 is about 29522.7877579337. The cubic root of 871594997 is about 955.2233049625.

The spelling of 871594997 in words is "eight hundred seventy-one million, five hundred ninety-four thousand, nine hundred ninety-seven".