8881605 has 12 divisors (see below), whose sum is σ = 15394860. Its totient is φ = 4736832.

The previous prime is 8881601. The next prime is 8881619. The reversal of 8881605 is 5061888.

It can be written as a sum of positive squares in 2 ways, for example, as 5673924 + 3207681 = 2382^2 + 1791^2 .

It is not a de Polignac number, because 8881605 - 2² = 8881601 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 8881605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8881601) 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 11 ways as a sum of consecutive naturals, for example, 98640 + ... + 98729.

It is an arithmetic number, because the mean of its divisors is an integer number (1282905).

Almost surely, 2^8881605 is an apocalyptic number.

It is an amenable number.

8881605 is a deficient number, since it is larger than the sum of its proper divisors (6513255).

8881605 is a wasteful number, since it uses less digits than its factorization.

8881605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197380 (or 197377 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 8881605 is about 2980.2021743499. The cubic root of 8881605 is about 207.0922364273.

The spelling of 8881605 in words is "eight million, eight hundred eighty-one thousand, six hundred five".