9872605 has 8 divisors (see below), whose sum is σ = 11864664. Its totient is φ = 7886400.

The previous prime is 9872587. The next prime is 9872623. The reversal of 9872605 is 5062789.

It is an interprime number because it is at equal distance from previous prime (9872587) and next prime (9872623).

It can be written as a sum of positive squares in 4 ways, for example, as 6724 + 9865881 = 82^2 + 3141^2 .

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

It is not a de Polignac number, because 9872605 - 2²³ = 1483997 is a prime.

It is a Duffinian number.

9872605 is a lucky number.

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, 4375 + ... + 6235.

It is an arithmetic number, because the mean of its divisors is an integer number (1483083).

Almost surely, 2^9872605 is an apocalyptic number.

It is an amenable number.

9872605 is a deficient number, since it is larger than the sum of its proper divisors (1992059).

9872605 is a wasteful number, since it uses less digits than its factorization.

9872605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 9872605 is about 3142.0701774467. The cubic root of 9872605 is about 214.5246755391.

The spelling of 9872605 in words is "nine million, eight hundred seventy-two thousand, six hundred five".