87609233 has 4 divisors (see below), whose sum is σ = 87700800. Its totient is φ = 87517668.

The previous prime is 87609199. The next prime is 87609253. The reversal of 87609233 is 33290678.

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 87609233 - 2¹⁸ = 87347089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87609253) 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, 44333 + ... + 46266.

It is an arithmetic number, because the mean of its divisors is an integer number (21925200).

Almost surely, 2^87609233 is an apocalyptic number.

It is an amenable number.

87609233 is a deficient number, since it is larger than the sum of its proper divisors (91567).

87609233 is an equidigital number, since it uses as much as digits as its factorization.

87609233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91566.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 87609233 is about 9359.9803952786. The cubic root of 87609233 is about 444.1366638930.

The spelling of 87609233 in words is "eighty-seven million, six hundred nine thousand, two hundred thirty-three".