87117672 has 32 divisors (see below), whose sum is σ = 218095200. Its totient is φ = 28999104.

The previous prime is 87117671. The next prime is 87117677. The reversal of 87117672 is 27671178.

It is a self number, because there is not a number n which added to its sum of digits gives 87117672.

It is not an unprimeable number, because it can be changed into a prime (87117671) 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 7 ways as a sum of consecutive naturals, for example, 18979 + ... + 23117.

It is an arithmetic number, because the mean of its divisors is an integer number (6815475).

Almost surely, 2^87117672 is an apocalyptic number.

It is an amenable number.

87117672 is an abundant number, since it is smaller than the sum of its proper divisors (130977528).

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

87117672 is a wasteful number, since it uses less digits than its factorization.

87117672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5025 (or 5021 counting only the distinct ones).

The product of its digits is 32928, while the sum is 39.

The square root of 87117672 is about 9333.6848029061. The cubic root of 87117672 is about 443.3044462054.

The spelling of 87117672 in words is "eighty-seven million, one hundred seventeen thousand, six hundred seventy-two".