100002647 has 2 divisors, whose sum is σ = 100002648. Its totient is φ = 100002646.

The previous prime is 100002641. The next prime is 100002671. The reversal of 100002647 is 746200001.

It is a weak prime.

It is an emirp because it is prime and its reverse (746200001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100002647 - 2¹⁰ = 100001623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100002641) 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, 50001323 + 50001324.

It is an arithmetic number, because the mean of its divisors is an integer number (50001324).

Almost surely, 2^100002647 is an apocalyptic number.

100002647 is a deficient number, since it is larger than the sum of its proper divisors (1).

100002647 is an equidigital number, since it uses as much as digits as its factorization.

100002647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 100002647 is about 10000.1323491242. The cubic root of 100002647 is about 464.1629787537.

Adding to 100002647 its reverse (746200001), we get a palindrome (846202648).

The spelling of 100002647 in words is "one hundred million, two thousand, six hundred forty-seven".