87968656 has 20 divisors (see below), whose sum is σ = 170639500. Its totient is φ = 43932672.

The previous prime is 87968653. The next prime is 87968663. The reversal of 87968656 is 65686978.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17139600 + 70829056 = 4140^2 + 8416^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87968597 and 87968606.

It is not an unprimeable number, because it can be changed into a prime (87968653) 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 3 ways as a sum of consecutive naturals, for example, 13420 + ... + 18868.

It is an arithmetic number, because the mean of its divisors is an integer number (8531975).

Almost surely, 2^87968656 is an apocalyptic number.

It is an amenable number.

87968656 is a deficient number, since it is larger than the sum of its proper divisors (82670844).

87968656 is a wasteful number, since it uses less digits than its factorization.

87968656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6466 (or 6460 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 55.

The square root of 87968656 is about 9379.1607300440. The cubic root of 87968656 is about 444.7432024246.

The spelling of 87968656 in words is "eighty-seven million, nine hundred sixty-eight thousand, six hundred fifty-six".