100005605 has 8 divisors (see below), whose sum is σ = 137150592. Its totient is φ = 68575248.

The previous prime is 100005599. The next prime is 100005617. The reversal of 100005605 is 506500001.

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

It is not a de Polignac number, because 100005605 - 2²⁰ = 98957029 is a prime.

It is a super-2 number, since 2×100005605² = 20002242062832050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1428617 + ... + 1428686.

It is an arithmetic number, because the mean of its divisors is an integer number (17143824).

Almost surely, 2^100005605 is an apocalyptic number.

It is an amenable number.

100005605 is a deficient number, since it is larger than the sum of its proper divisors (37144987).

100005605 is an equidigital number, since it uses as much as digits as its factorization.

100005605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857315.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 100005605 is about 10000.2802460731. The cubic root of 100005605 is about 464.1675552344.

Adding to 100005605 its reverse (506500001), we get a palindrome (606505606).

The spelling of 100005605 in words is "one hundred million, five thousand, six hundred five".