100664161 has 32 divisors (see below), whose sum is σ = 118350848. Its totient is φ = 84913920.

The previous prime is 100664159. The next prime is 100664173. The reversal of 100664161 is 161466001.

It is not a de Polignac number, because 100664161 - 2¹ = 100664159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100664101) 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 31 ways as a sum of consecutive naturals, for example, 641095 + ... + 641251.

It is an arithmetic number, because the mean of its divisors is an integer number (3698464).

Almost surely, 2^100664161 is an apocalyptic number.

It is an amenable number.

100664161 is a deficient number, since it is larger than the sum of its proper divisors (17686687).

100664161 is a wasteful number, since it uses less digits than its factorization.

100664161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 100664161 is about 10033.1530936192. The cubic root of 100664161 is about 465.1842042005.

The spelling of 100664161 in words is "one hundred million, six hundred sixty-four thousand, one hundred sixty-one".