87866873720 has 32 divisors (see below), whose sum is σ = 197711236800. Its totient is φ = 35144834688.

The previous prime is 87866873701. The next prime is 87866873729. The reversal of 87866873720 is 2737866878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87866873729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 856961 + ... + 953999.

It is an arithmetic number, because the mean of its divisors is an integer number (6178476150).

Almost surely, 2^87866873720 is an apocalyptic number.

It is an amenable number.

87866873720 is an abundant number, since it is smaller than the sum of its proper divisors (109844363080).

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

87866873720 is a wasteful number, since it uses less digits than its factorization.

87866873720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119687 (or 119683 counting only the distinct ones).

The product of its (nonzero) digits is 37933056, while the sum is 62.

The spelling of 87866873720 in words is "eighty-seven billion, eight hundred sixty-six million, eight hundred seventy-three thousand, seven hundred twenty".