87808243 has 2 divisors, whose sum is σ = 87808244. Its totient is φ = 87808242.

The previous prime is 87808241. The next prime is 87808307. The reversal of 87808243 is 34280878.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87808243 - 2¹ = 87808241 is a prime.

Together with 87808241, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 87808196 and 87808205.

It is not a weakly prime, because it can be changed into another prime (87808241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43904121 + 43904122.

It is an arithmetic number, because the mean of its divisors is an integer number (43904122).

Almost surely, 2^87808243 is an apocalyptic number.

87808243 is a deficient number, since it is larger than the sum of its proper divisors (1).

87808243 is an equidigital number, since it uses as much as digits as its factorization.

87808243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 87808243 is about 9370.6052632688. The cubic root of 87808243 is about 444.4727045618.

The spelling of 87808243 in words is "eighty-seven million, eight hundred eight thousand, two hundred forty-three".