100002660 has 24 divisors (see below), whose sum is σ = 280007616. Its totient is φ = 26667360.

The previous prime is 100002647. The next prime is 100002671. The reversal of 100002660 is 66200001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833296 + ... + 833415.

It is an arithmetic number, because the mean of its divisors is an integer number (11666984).

Almost surely, 2^100002660 is an apocalyptic number.

100002660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100002660 is an abundant number, since it is smaller than the sum of its proper divisors (180004956).

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

100002660 is a wasteful number, since it uses less digits than its factorization.

100002660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666723 (or 1666721 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 100002660 is about 10000.1329991156. The cubic root of 100002660 is about 464.1629988669.

Adding to 100002660 its reverse (66200001), we get a palindrome (166202661).

The spelling of 100002660 in words is "one hundred million, two thousand, six hundred sixty".