8661123 has 12 divisors (see below), whose sum is σ = 12537720. Its totient is φ = 5761536.

The previous prime is 8661119. The next prime is 8661137. The reversal of 8661123 is 3211668.

It is not a de Polignac number, because 8661123 - 2² = 8661119 is a prime.

It is a super-2 number, since 2×8661123² = 150030103242258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8661173) 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 11 ways as a sum of consecutive naturals, for example, 5443 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (1044810).

Almost surely, 2^8661123 is an apocalyptic number.

8661123 is a deficient number, since it is larger than the sum of its proper divisors (3876597).

8661123 is a wasteful number, since it uses less digits than its factorization.

8661123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098 (or 2095 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 8661123 is about 2942.9785931943. The cubic root of 8661123 is about 205.3641989100.

The spelling of 8661123 in words is "eight million, six hundred sixty-one thousand, one hundred twenty-three".