87718271 has 2 divisors, whose sum is σ = 87718272. Its totient is φ = 87718270.

The previous prime is 87718259. The next prime is 87718277. The reversal of 87718271 is 17281778.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87718271 - 2⁶ = 87718207 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87718277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43859135 + 43859136.

It is an arithmetic number, because the mean of its divisors is an integer number (43859136).

Almost surely, 2^87718271 is an apocalyptic number.

87718271 is a deficient number, since it is larger than the sum of its proper divisors (1).

87718271 is an equidigital number, since it uses as much as digits as its factorization.

87718271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43904, while the sum is 41.

The square root of 87718271 is about 9365.8032757474. The cubic root of 87718271 is about 444.3208442387.

The spelling of 87718271 in words is "eighty-seven million, seven hundred eighteen thousand, two hundred seventy-one".