87800243 has 2 divisors, whose sum is σ = 87800244. Its totient is φ = 87800242.

The previous prime is 87800231. The next prime is 87800267. The reversal of 87800243 is 34200878.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87800243 - 2⁴ = 87800227 is a prime.

It is not a weakly prime, because it can be changed into another prime (87800213) 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, 43900121 + 43900122.

It is an arithmetic number, because the mean of its divisors is an integer number (43900122).

Almost surely, 2^87800243 is an apocalyptic number.

87800243 is a deficient number, since it is larger than the sum of its proper divisors (1).

87800243 is an equidigital number, since it uses as much as digits as its factorization.

87800243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 87800243 is about 9370.1783867758. The cubic root of 87800243 is about 444.4592058685.

The spelling of 87800243 in words is "eighty-seven million, eight hundred thousand, two hundred forty-three".