87536321 has 4 divisors (see below), whose sum is σ = 91342272. Its totient is φ = 83730372.

The previous prime is 87536311. The next prime is 87536327. The reversal of 87536321 is 12363578.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87536321 - 2⁶ = 87536257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87536327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1902941 + ... + 1902986.

It is an arithmetic number, because the mean of its divisors is an integer number (22835568).

Almost surely, 2^87536321 is an apocalyptic number.

It is an amenable number.

87536321 is a deficient number, since it is larger than the sum of its proper divisors (3805951).

87536321 is a wasteful number, since it uses less digits than its factorization.

87536321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805950.

The product of its digits is 30240, while the sum is 35.

The square root of 87536321 is about 9356.0847046187. The cubic root of 87536321 is about 444.0134201095.

Adding to 87536321 its reverse (12363578), we get a palindrome (99899899).

The spelling of 87536321 in words is "eighty-seven million, five hundred thirty-six thousand, three hundred twenty-one".