100165645 has 8 divisors (see below), whose sum is σ = 121647456. Its totient is φ = 79166736.

The previous prime is 100165633. The next prime is 100165661. The reversal of 100165645 is 546561001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100165645 is a prime.

It is a super-3 number, since 3×100165645³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120267 + ... + 121096.

It is an arithmetic number, because the mean of its divisors is an integer number (15205932).

Almost surely, 2^100165645 is an apocalyptic number.

It is an amenable number.

100165645 is a deficient number, since it is larger than the sum of its proper divisors (21481811).

100165645 is an equidigital number, since it uses as much as digits as its factorization.

100165645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241451.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 100165645 is about 10008.2788230544. The cubic root of 100165645 is about 464.4150273109.

The spelling of 100165645 in words is "one hundred million, one hundred sixty-five thousand, six hundred forty-five".