87184871 has 2 divisors, whose sum is σ = 87184872. Its totient is φ = 87184870.

The previous prime is 87184847. The next prime is 87184873. The reversal of 87184871 is 17848178.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87184871 is a prime.

Together with 87184873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87184873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43592435 + 43592436.

It is an arithmetic number, because the mean of its divisors is an integer number (43592436).

Almost surely, 2^87184871 is an apocalyptic number.

87184871 is a deficient number, since it is larger than the sum of its proper divisors (1).

87184871 is an equidigital number, since it uses as much as digits as its factorization.

87184871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100352, while the sum is 44.

The square root of 87184871 is about 9337.2839198559. The cubic root of 87184871 is about 443.4183992017.

The spelling of 87184871 in words is "eighty-seven million, one hundred eighty-four thousand, eight hundred seventy-one".