87798587 has 2 divisors, whose sum is σ = 87798588. Its totient is φ = 87798586.

The previous prime is 87798569. The next prime is 87798619. The reversal of 87798587 is 78589778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87798587 - 2⁸ = 87798331 is a prime.

It is not a weakly prime, because it can be changed into another prime (87798527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43899293 + 43899294.

It is an arithmetic number, because the mean of its divisors is an integer number (43899294).

Almost surely, 2^87798587 is an apocalyptic number.

87798587 is a deficient number, since it is larger than the sum of its proper divisors (1).

87798587 is an equidigital number, since it uses as much as digits as its factorization.

87798587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7902720, while the sum is 59.

The square root of 87798587 is about 9370.0900209123. The cubic root of 87798587 is about 444.4564115366.

The spelling of 87798587 in words is "eighty-seven million, seven hundred ninety-eight thousand, five hundred eighty-seven".