871647552 has 42 divisors (see below), whose sum is σ = 2498421978. Its totient is φ = 290548992.

The previous prime is 871647503. The next prime is 871647559. The reversal of 871647552 is 255746178.

871647552 is a `hidden beast` number, since 87 + 16 + 4 + 7 + 552 = 666.

It can be written as a sum of positive squares in only one way, i.e., 865771776 + 5875776 = 29424^2 + 2424^2 .

It is a junction number, because it is equal to n+sod(n) for n = 871647498 and 871647507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871647559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 756063 + ... + 757214.

Almost surely, 2^871647552 is an apocalyptic number.

It is an amenable number.

871647552 is an abundant number, since it is smaller than the sum of its proper divisors (1626774426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871647552 is a wasteful number, since it uses less digits than its factorization.

871647552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513295 (or 1513282 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 871647552 is about 29523.6778196755. The cubic root of 871647552 is about 955.2425037693.

The spelling of 871647552 in words is "eight hundred seventy-one million, six hundred forty-seven thousand, five hundred fifty-two".