87912771 has 4 divisors (see below), whose sum is σ = 117217032. Its totient is φ = 58608512.

The previous prime is 87912731. The next prime is 87912779. The reversal of 87912771 is 17721978.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87912771 - 2⁶ = 87912707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87912779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14652126 + ... + 14652131.

It is an arithmetic number, because the mean of its divisors is an integer number (29304258).

Almost surely, 2^87912771 is an apocalyptic number.

87912771 is a deficient number, since it is larger than the sum of its proper divisors (29304261).

87912771 is a wasteful number, since it uses less digits than its factorization.

87912771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29304260.

The product of its digits is 49392, while the sum is 42.

The square root of 87912771 is about 9376.1810456070. The cubic root of 87912771 is about 444.6490031947.

The spelling of 87912771 in words is "eighty-seven million, nine hundred twelve thousand, seven hundred seventy-one".