99966887 has 4 divisors (see below), whose sum is σ = 100019040. Its totient is φ = 99914736.

The previous prime is 99966877. The next prime is 99966899. The reversal of 99966887 is 78866999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99966887 - 2⁸ = 99966631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99966877) 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 in 3 ways as a sum of consecutive naturals, for example, 23087 + ... + 27072.

It is an arithmetic number, because the mean of its divisors is an integer number (25004760).

Almost surely, 2^99966887 is an apocalyptic number.

99966887 is a deficient number, since it is larger than the sum of its proper divisors (52153).

99966887 is a wasteful number, since it uses less digits than its factorization.

99966887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52152.

The product of its digits is 11757312, while the sum is 62.

The square root of 99966887 is about 9998.3442129185. The cubic root of 99966887 is about 464.1076453950.

The spelling of 99966887 in words is "ninety-nine million, nine hundred sixty-six thousand, eight hundred eighty-seven".