100660065 has 64 divisors (see below), whose sum is σ = 182345472. Its totient is φ = 47001600.

The previous prime is 100660039. The next prime is 100660067. The reversal of 100660065 is 560066001.

It is not a de Polignac number, because 100660065 - 2⁸ = 100659809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100660067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 734677 + ... + 734813.

It is an arithmetic number, because the mean of its divisors is an integer number (2849148).

Almost surely, 2^100660065 is an apocalyptic number.

100660065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100660065 is a deficient number, since it is larger than the sum of its proper divisors (81685407).

100660065 is a wasteful number, since it uses less digits than its factorization.

100660065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 100660065 is about 10032.9489682745. The cubic root of 100660065 is about 465.1778947045.

The spelling of 100660065 in words is "one hundred million, six hundred sixty thousand, sixty-five".