87866203 has 4 divisors (see below), whose sum is σ = 92490760. Its totient is φ = 83241648.

The previous prime is 87866197. The next prime is 87866227. The reversal of 87866203 is 30266878.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30266878 = 2 ⋅15133439.

It is a cyclic number.

It is not a de Polignac number, because 87866203 - 2¹³ = 87858011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87866903) 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 in 3 ways as a sum of consecutive naturals, for example, 2312250 + ... + 2312287.

It is an arithmetic number, because the mean of its divisors is an integer number (23122690).

Almost surely, 2^87866203 is an apocalyptic number.

87866203 is a deficient number, since it is larger than the sum of its proper divisors (4624557).

87866203 is a wasteful number, since it uses less digits than its factorization.

87866203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4624556.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 87866203 is about 9373.6974028395. The cubic root of 87866203 is about 444.5704781153.

It can be divided in two parts, 878 and 66203, that added together give a square (67081 = 259²).

The spelling of 87866203 in words is "eighty-seven million, eight hundred sixty-six thousand, two hundred three".