123360661 has 4 divisors (see below), whose sum is σ = 128724192. Its totient is φ = 117997132.

The previous prime is 123360649. The next prime is 123360683. The reversal of 123360661 is 166063321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166063321 = 97 ⋅1711993.

It is a cyclic number.

It is not a de Polignac number, because 123360661 - 2¹³ = 123352469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123369661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2681731 + ... + 2681776.

It is an arithmetic number, because the mean of its divisors is an integer number (32181048).

Almost surely, 2^123360661 is an apocalyptic number.

It is an amenable number.

123360661 is a deficient number, since it is larger than the sum of its proper divisors (5363531).

123360661 is an equidigital number, since it uses as much as digits as its factorization.

123360661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5363530.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 123360661 is about 11106.7844581589. The cubic root of 123360661 is about 497.8045891175.

The spelling of 123360661 in words is "one hundred twenty-three million, three hundred sixty thousand, six hundred sixty-one".