87432211 has 8 divisors (see below), whose sum is σ = 88545744. Its totient is φ = 86323200.

The previous prime is 87432209. The next prime is 87432217. The reversal of 87432211 is 11223478.

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

It is a cyclic number.

It is not a de Polignac number, because 87432211 - 2¹ = 87432209 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 87432211.

It is not an unprimeable number, because it can be changed into a prime (87432217) 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, 53811 + ... + 55411.

It is an arithmetic number, because the mean of its divisors is an integer number (11068218).

Almost surely, 2^87432211 is an apocalyptic number.

87432211 is a deficient number, since it is larger than the sum of its proper divisors (1113533).

87432211 is a wasteful number, since it uses less digits than its factorization.

87432211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261.

The product of its digits is 2688, while the sum is 28.

The square root of 87432211 is about 9350.5192903924. The cubic root of 87432211 is about 443.8373233955.

Adding to 87432211 its reverse (11223478), we get a palindrome (98655689).

The spelling of 87432211 in words is "eighty-seven million, four hundred thirty-two thousand, two hundred eleven".