101604605 has 4 divisors (see below), whose sum is σ = 121925532. Its totient is φ = 81283680.

The previous prime is 101604599. The next prime is 101604611. The reversal of 101604605 is 506406101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506406101 = 5669 ⋅89329.

It is an interprime number because it is at equal distance from previous prime (101604599) and next prime (101604611).

It can be written as a sum of positive squares in 2 ways, for example, as 56942116 + 44662489 = 7546^2 + 6683^2 .

It is not a de Polignac number, because 101604605 - 2²⁴ = 84827389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10160456 + ... + 10160465.

It is an arithmetic number, because the mean of its divisors is an integer number (30481383).

Almost surely, 2^101604605 is an apocalyptic number.

It is an amenable number.

101604605 is a deficient number, since it is larger than the sum of its proper divisors (20320927).

101604605 is an equidigital number, since it uses as much as digits as its factorization.

101604605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20320926.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 101604605 is about 10079.9109619083. The cubic root of 101604605 is about 466.6283605179.

The spelling of 101604605 in words is "one hundred one million, six hundred four thousand, six hundred five".