9123661 has 8 divisors (see below), whose sum is σ = 9492120. Its totient is φ = 8758848.

The previous prime is 9123659. The next prime is 9123677. The reversal of 9123661 is 1663219.

It can be written as a sum of positive squares in 4 ways, for example, as 2621161 + 6502500 = 1619^2 + 2550^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9123661 - 2¹ = 9123659 is a prime.

It is a Duffinian number.

9123661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9123061) by changing a digit.

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, 4915 + ... + 6511.

It is an arithmetic number, because the mean of its divisors is an integer number (1186515).

Almost surely, 2^9123661 is an apocalyptic number.

It is an amenable number.

9123661 is a deficient number, since it is larger than the sum of its proper divisors (368459).

9123661 is a wasteful number, since it uses less digits than its factorization.

9123661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823.

The product of its digits is 1944, while the sum is 28.

The square root of 9123661 is about 3020.5398524105. The cubic root of 9123661 is about 208.9567380676.

The spelling of 9123661 in words is "nine million, one hundred twenty-three thousand, six hundred sixty-one".