100868543 has 4 divisors (see below), whose sum is σ = 102145440. Its totient is φ = 99591648.

The previous prime is 100868527. The next prime is 100868561. The reversal of 100868543 is 345868001.

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 100868543 - 2⁴ = 100868527 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 (100868143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638330 + ... + 638487.

It is an arithmetic number, because the mean of its divisors is an integer number (25536360).

Almost surely, 2^100868543 is an apocalyptic number.

100868543 is a deficient number, since it is larger than the sum of its proper divisors (1276897).

100868543 is an equidigital number, since it uses as much as digits as its factorization.

100868543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276896.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 100868543 is about 10043.3332614227. Note that the first 3 decimals coincide. The cubic root of 100868543 is about 465.4988180103.

The spelling of 100868543 in words is "one hundred million, eight hundred sixty-eight thousand, five hundred forty-three".