999996587 has 2 divisors, whose sum is σ = 999996588. Its totient is φ = 999996586.

The previous prime is 999996541. The next prime is 999996611. The reversal of 999996587 is 785699999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999996587 - 2²⁴ = 983219371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999996587.

It is not a weakly prime, because it can be changed into another prime (999999587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499998293 + 499998294.

It is an arithmetic number, because the mean of its divisors is an integer number (499998294).

Almost surely, 2^999996587 is an apocalyptic number.

999996587 is a deficient number, since it is larger than the sum of its proper divisors (1).

999996587 is an equidigital number, since it uses as much as digits as its factorization.

999996587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 99202320, while the sum is 71.

The square root of 999996587 is about 31622.7226373695. The cubic root of 999996587 is about 999.9988623320.

The spelling of 999996587 in words is "nine hundred ninety-nine million, nine hundred ninety-six thousand, five hundred eighty-seven".