123555683 has 4 divisors (see below), whose sum is σ = 125581248. Its totient is φ = 121530120.

The previous prime is 123555661. The next prime is 123555713. The reversal of 123555683 is 386555321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123555683 - 2²⁴ = 106778467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123555083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012691 + ... + 1012812.

It is an arithmetic number, because the mean of its divisors is an integer number (31395312).

Almost surely, 2^123555683 is an apocalyptic number.

123555683 is a deficient number, since it is larger than the sum of its proper divisors (2025565).

123555683 is an equidigital number, since it uses as much as digits as its factorization.

123555683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025564.

The product of its digits is 108000, while the sum is 38.

The square root of 123555683 is about 11115.5603997279. The cubic root of 123555683 is about 498.0667789462.

The spelling of 123555683 in words is "one hundred twenty-three million, five hundred fifty-five thousand, six hundred eighty-three".