87633233 has 2 divisors, whose sum is σ = 87633234. Its totient is φ = 87633232.

The previous prime is 87633223. The next prime is 87633251. The reversal of 87633233 is 33233678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84787264 + 2845969 = 9208^2 + 1687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87633233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87633193 and 87633202.

It is not a weakly prime, because it can be changed into another prime (87633223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43816616 + 43816617.

It is an arithmetic number, because the mean of its divisors is an integer number (43816617).

Almost surely, 2^87633233 is an apocalyptic number.

It is an amenable number.

87633233 is a deficient number, since it is larger than the sum of its proper divisors (1).

87633233 is an equidigital number, since it uses as much as digits as its factorization.

87633233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 35.

The square root of 87633233 is about 9361.2623614553. The cubic root of 87633233 is about 444.1772163416.

The spelling of 87633233 in words is "eighty-seven million, six hundred thirty-three thousand, two hundred thirty-three".