100066 has 4 divisors (see below), whose sum is σ = 150102. Its totient is φ = 50032.

The previous prime is 100057. The next prime is 100069. The reversal of 100066 is 660001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 99225 + 841 = 315^2 + 29^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

100066 is a modest number, since divided by 66 gives 10 as remainder.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25015 + ... + 25018.

2¹⁰⁰⁰⁶⁶ is an apocalyptic number.

100066 is a deficient number, since it is larger than the sum of its proper divisors (50036).

100066 is an equidigital number, since it uses as much as digits as its factorization.

100066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50035.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 100066 is about 316.3321039667. The cubic root of 100066 is about 46.4260975859.

Adding to 100066 its reverse (660001), we get a palindrome (760067).

The spelling of 100066 in words is "one hundred thousand, sixty-six".