87222243 has 8 divisors (see below), whose sum is σ = 116359168. Its totient is φ = 58116744.

The previous prime is 87222229. The next prime is 87222269. The reversal of 87222243 is 34222278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87222243 - 2¹³ = 87214051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87222243.

It is not an unprimeable number, because it can be changed into a prime (87222643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355 + ... + 13212.

It is an arithmetic number, because the mean of its divisors is an integer number (14544896).

Almost surely, 2^87222243 is an apocalyptic number.

87222243 is a deficient number, since it is larger than the sum of its proper divisors (29136925).

87222243 is a wasteful number, since it uses less digits than its factorization.

87222243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15713.

The product of its digits is 10752, while the sum is 30.

The square root of 87222243 is about 9339.2849298006. The cubic root of 87222243 is about 443.4817475977.

The spelling of 87222243 in words is "eighty-seven million, two hundred twenty-two thousand, two hundred forty-three".