87802243 has 4 divisors (see below), whose sum is σ = 88579368. Its totient is φ = 87025120.

The previous prime is 87802223. The next prime is 87802277. The reversal of 87802243 is 34220878.

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 87802243 - 2⁹ = 87801731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87802199 and 87802208.

It is not an unprimeable number, because it can be changed into a prime (87802213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388393 + ... + 388618.

It is an arithmetic number, because the mean of its divisors is an integer number (22144842).

Almost surely, 2^87802243 is an apocalyptic number.

87802243 is a deficient number, since it is larger than the sum of its proper divisors (777125).

87802243 is a wasteful number, since it uses less digits than its factorization.

87802243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777124.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 87802243 is about 9370.2851077222. The cubic root of 87802243 is about 444.4625806187.

The spelling of 87802243 in words is "eighty-seven million, eight hundred two thousand, two hundred forty-three".