8661003 has 16 divisors (see below), whose sum is σ = 12534816. Its totient is φ = 5287680.

The previous prime is 8661001. The next prime is 8661043. The reversal of 8661003 is 3001668.

It is not a de Polignac number, because 8661003 - 2¹ = 8661001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8661001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4533 + ... + 6153.

It is an arithmetic number, because the mean of its divisors is an integer number (783426).

Almost surely, 2^8661003 is an apocalyptic number.

8661003 is a deficient number, since it is larger than the sum of its proper divisors (3873813).

8661003 is a wasteful number, since it uses less digits than its factorization.

8661003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 8661003 is about 2942.9582056156. The cubic root of 8661003 is about 205.3632504641.

The spelling of 8661003 in words is "eight million, six hundred sixty-one thousand, three".