87006813867 has 24 divisors (see below), whose sum is σ = 132659654400. Its totient is φ = 54798564528.

The previous prime is 87006813863. The next prime is 87006813877. The reversal of 87006813867 is 76831860078.

It is not a de Polignac number, because 87006813867 - 2² = 87006813863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87006813863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 647263 + ... + 770040.

It is an arithmetic number, because the mean of its divisors is an integer number (5527485600).

Almost surely, 2^87006813867 is an apocalyptic number.

87006813867 is a deficient number, since it is larger than the sum of its proper divisors (45652840533).

87006813867 is a wasteful number, since it uses less digits than its factorization.

87006813867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417687 (or 1417684 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 87006813867 in words is "eighty-seven billion, six million, eight hundred thirteen thousand, eight hundred sixty-seven".