87009105668 has 12 divisors (see below), whose sum is σ = 152315895900. Its totient is φ = 43490278272.

The previous prime is 87009105643. The next prime is 87009105683. The reversal of 87009105668 is 86650190078.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32660441284 + 54348664384 = 180722^2 + 233128^2 .

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 3 ways as a sum of consecutive naturals, for example, 3554921 + ... + 3579312.

It is an arithmetic number, because the mean of its divisors is an integer number (12692991325).

Almost surely, 2^87009105668 is an apocalyptic number.

It is an amenable number.

87009105668 is a deficient number, since it is larger than the sum of its proper divisors (65306790232).

87009105668 is a wasteful number, since it uses less digits than its factorization.

87009105668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7137286 (or 7137284 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 87009105668 in words is "eighty-seven billion, nine million, one hundred five thousand, six hundred sixty-eight".