9880605 has 36 divisors (see below), whose sum is σ = 19926972. Its totient is φ = 4515840.

The previous prime is 9880603. The next prime is 9880643. The reversal of 9880605 is 5060889.

It can be written as a sum of positive squares in 2 ways, for example, as 5731236 + 4149369 = 2394^2 + 2037^2 .

It is not a de Polignac number, because 9880605 - 2¹ = 9880603 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9880605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9880601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 36 + ... + 4445.

It is an arithmetic number, because the mean of its divisors is an integer number (553527).

Almost surely, 2^9880605 is an apocalyptic number.

It is an amenable number.

9880605 is an abundant number, since it is smaller than the sum of its proper divisors (10046367).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9880605 is a wasteful number, since it uses less digits than its factorization.

9880605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506 (or 4496 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 9880605 is about 3143.3429656975. The cubic root of 9880605 is about 214.5826046623.

The spelling of 9880605 in words is "nine million, eight hundred eighty thousand, six hundred five".