99668887 has 2 divisors, whose sum is σ = 99668888. Its totient is φ = 99668886.

The previous prime is 99668873. The next prime is 99668893. The reversal of 99668887 is 78886699.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99668887 is a prime.

It is a super-3 number, since 3×99668887³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99668897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49834443 + 49834444.

It is an arithmetic number, because the mean of its divisors is an integer number (49834444).

Almost surely, 2^99668887 is an apocalyptic number.

99668887 is a deficient number, since it is larger than the sum of its proper divisors (1).

99668887 is an equidigital number, since it uses as much as digits as its factorization.

99668887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 61.

The square root of 99668887 is about 9983.4306227869. The cubic root of 99668887 is about 463.6460200906.

The spelling of 99668887 in words is "ninety-nine million, six hundred sixty-eight thousand, eight hundred eighty-seven".