87746863664 has 20 divisors (see below), whose sum is σ = 170014837104. Its totient is φ = 43872067008.

The previous prime is 87746863619. The next prime is 87746863669. The reversal of 87746863664 is 46636864778.

It is a self number, because there is not a number n which added to its sum of digits gives 87746863664.

It is not an unprimeable number, because it can be changed into a prime (87746863669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623654 + ... + 751290.

Almost surely, 2^87746863664 is an apocalyptic number.

It is an amenable number.

87746863664 is a deficient number, since it is larger than the sum of its proper divisors (82267973440).

87746863664 is a wasteful number, since it uses less digits than its factorization.

87746863664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170612 (or 170606 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 65.

The spelling of 87746863664 in words is "eighty-seven billion, seven hundred forty-six million, eight hundred sixty-three thousand, six hundred sixty-four".