100668287 has 2 divisors, whose sum is σ = 100668288. Its totient is φ = 100668286.

The previous prime is 100668277. The next prime is 100668299. The reversal of 100668287 is 782866001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100668287 - 2⁶ = 100668223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100668287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100668277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50334143 + 50334144.

It is an arithmetic number, because the mean of its divisors is an integer number (50334144).

Almost surely, 2^100668287 is an apocalyptic number.

100668287 is a deficient number, since it is larger than the sum of its proper divisors (1).

100668287 is an equidigital number, since it uses as much as digits as its factorization.

100668287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 100668287 is about 10033.3587098239. The cubic root of 100668287 is about 465.1905597355.

The spelling of 100668287 in words is "one hundred million, six hundred sixty-eight thousand, two hundred eighty-seven".