100691984 has 10 divisors (see below), whose sum is σ = 195090750. Its totient is φ = 50345984.

The previous prime is 100691977. The next prime is 100691989. The reversal of 100691984 is 489196001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 90630400 + 10061584 = 9520^2 + 3172^2 .

It is a super-3 number, since 3×100691984³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (100691989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3146609 + ... + 3146640.

It is an arithmetic number, because the mean of its divisors is an integer number (19509075).

Almost surely, 2^100691984 is an apocalyptic number.

It is an amenable number.

100691984 is a deficient number, since it is larger than the sum of its proper divisors (94398766).

100691984 is an equidigital number, since it uses as much as digits as its factorization.

100691984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6293257 (or 6293251 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 100691984 is about 10034.5395509709. The cubic root of 100691984 is about 465.2270583395.

The spelling of 100691984 in words is "one hundred million, six hundred ninety-one thousand, nine hundred eighty-four".