100100864 has 18 divisors (see below), whose sum is σ = 199811220. Its totient is φ = 50050304.

The previous prime is 100100863. The next prime is 100100867. The reversal of 100100864 is 468001001.

It is not an unprimeable number, because it can be changed into a prime (100100863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195254 + ... + 195765.

Almost surely, 2^100100864 is an apocalyptic number.

It is an amenable number.

100100864 is a deficient number, since it is larger than the sum of its proper divisors (99710356).

100100864 is an frugal number, since it uses more digits than its factorization.

100100864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391035 (or 391021 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 100100864 is about 10005.0419289476. The cubic root of 100100864 is about 464.3148873278.

Adding to 100100864 its reverse (468001001), we get a palindrome (568101865).

The spelling of 100100864 in words is "one hundred million, one hundred thousand, eight hundred sixty-four".