100643116 has 24 divisors (see below), whose sum is σ = 201519360. Its totient is φ = 43082832.

The previous prime is 100643113. The next prime is 100643117. The reversal of 100643116 is 611346001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (100643113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32775 + ... + 35713.

It is an arithmetic number, because the mean of its divisors is an integer number (8396640).

Almost surely, 2^100643116 is an apocalyptic number.

It is an amenable number.

100643116 is an abundant number, since it is smaller than the sum of its proper divisors (100876244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100643116 is a wasteful number, since it uses less digits than its factorization.

100643116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173 (or 4171 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 100643116 is about 10032.1042658059. The cubic root of 100643116 is about 465.1517845727.

Adding to 100643116 its reverse (611346001), we get a palindrome (711989117).

The spelling of 100643116 in words is "one hundred million, six hundred forty-three thousand, one hundred sixteen".