100664 has 8 divisors (see below), whose sum is σ = 188760. Its totient is φ = 50328.

The previous prime is 100649. The next prime is 100669. The reversal of 100664 is 466001.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 100664.

It is not an unprimeable number, because it can be changed into a prime (100669) 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 as a sum of consecutive naturals, namely, 6284 + ... + 6299.

It is an arithmetic number, because the mean of its divisors is an integer number (23595).

2¹⁰⁰⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

100664 is a deficient number, since it is larger than the sum of its proper divisors (88096).

100664 is a wasteful number, since it uses less digits than its factorization.

100664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12589 (or 12585 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 100664 is about 317.2759051677. The cubic root of 100664 is about 46.5183956199.

Adding to 100664 its reverse (466001), we get a palindrome (566665).

The spelling of 100664 in words is "one hundred thousand, six hundred sixty-four".