87755688 has 24 divisors (see below), whose sum is σ = 237671850. Its totient is φ = 29251872.

The previous prime is 87755671. The next prime is 87755743. The reversal of 87755688 is 88655778.

It is a happy number.

87755688 is a `hidden beast` number, since 8 + 7 + 7 + 556 + 88 = 666.

It can be written as a sum of positive squares in only one way, i.e., 52969284 + 34786404 = 7278^2 + 5898^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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, 609343 + ... + 609486.

Almost surely, 2^87755688 is an apocalyptic number.

It is an amenable number.

87755688 is an abundant number, since it is smaller than the sum of its proper divisors (149916162).

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

87755688 is a wasteful number, since it uses less digits than its factorization.

87755688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218841 (or 1218834 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 54.

The square root of 87755688 is about 9367.8005956574. The cubic root of 87755688 is about 444.3840115794.

It can be divided in two parts, 877 and 55688, that added together give a palindrome (56565).

The spelling of 87755688 in words is "eighty-seven million, seven hundred fifty-five thousand, six hundred eighty-eight".