100666544 has 20 divisors (see below), whose sum is σ = 212772840. Its totient is φ = 45757440.

The previous prime is 100666523. The next prime is 100666547. The reversal of 100666544 is 445666001.

It is a self number, because there is not a number n which added to its sum of digits gives 100666544.

It is not an unprimeable number, because it can be changed into a prime (100666547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285809 + ... + 286160.

It is an arithmetic number, because the mean of its divisors is an integer number (10638642).

Almost surely, 2^100666544 is an apocalyptic number.

It is an amenable number.

100666544 is an abundant number, since it is smaller than the sum of its proper divisors (112106296).

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

100666544 is a wasteful number, since it uses less digits than its factorization.

100666544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571988 (or 571982 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 100666544 is about 10033.2718492025. The cubic root of 100666544 is about 465.1878749051.

The spelling of 100666544 in words is "one hundred million, six hundred sixty-six thousand, five hundred forty-four".