87643411 has 2 divisors, whose sum is σ = 87643412. Its totient is φ = 87643410.

The previous prime is 87643403. The next prime is 87643429. The reversal of 87643411 is 11434678.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87643411 - 2³ = 87643403 is a prime.

It is not a weakly prime, because it can be changed into another prime (87643471) 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, 43821705 + 43821706.

It is an arithmetic number, because the mean of its divisors is an integer number (43821706).

Almost surely, 2^87643411 is an apocalyptic number.

87643411 is a deficient number, since it is larger than the sum of its proper divisors (1).

87643411 is an equidigital number, since it uses as much as digits as its factorization.

87643411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 87643411 is about 9361.8059689357. The cubic root of 87643411 is about 444.1944117234.

The spelling of 87643411 in words is "eighty-seven million, six hundred forty-three thousand, four hundred eleven".