87636433 has 2 divisors, whose sum is σ = 87636434. Its totient is φ = 87636432.

The previous prime is 87636397. The next prime is 87636449. The reversal of 87636433 is 33463678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72982849 + 14653584 = 8543^2 + 3828^2 .

It is a cyclic number.

It is not a de Polignac number, because 87636433 - 2⁹ = 87635921 is a prime.

It is not a weakly prime, because it can be changed into another prime (87636733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43818216 + 43818217.

It is an arithmetic number, because the mean of its divisors is an integer number (43818217).

Almost surely, 2^87636433 is an apocalyptic number.

It is an amenable number.

87636433 is a deficient number, since it is larger than the sum of its proper divisors (1).

87636433 is an equidigital number, since it uses as much as digits as its factorization.

87636433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 40.

The square root of 87636433 is about 9361.4332770148. The cubic root of 87636433 is about 444.1826227753.

The spelling of 87636433 in words is "eighty-seven million, six hundred thirty-six thousand, four hundred thirty-three".