100660 has 24 divisors (see below), whose sum is σ = 241920. Its totient is φ = 34464.

The previous prime is 100649. The next prime is 100669. The reversal of 100660 is 66001.

100660 = T₅₀ + T₅₁ + ... + T₈₉.

It is a self number, because there is not a number n which added to its sum of digits gives 100660.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 220 + ... + 499.

It is an arithmetic number, because the mean of its divisors is an integer number (10080).

2¹⁰⁰⁶⁶⁰ is an apocalyptic number.

100660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100660 is an abundant number, since it is smaller than the sum of its proper divisors (141260).

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

100660 is a wasteful number, since it uses less digits than its factorization.

100660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 733 counting only the distinct ones).

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

The square root of 100660 is about 317.2696014433. The cubic root of 100660 is about 46.5177794577.

Adding to 100660 its reverse (66001), we get a palindrome (166661).

The spelling of 100660 in words is "one hundred thousand, six hundred sixty".