123805568 has 64 divisors (see below), whose sum is σ = 261152640. Its totient is φ = 58368000.

The previous prime is 123805531. The next prime is 123805601. The reversal of 123805568 is 865508321.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162308 + ... + 163068.

It is an arithmetic number, because the mean of its divisors is an integer number (4080510).

Almost surely, 2^123805568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123805568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130576320).

123805568 is an abundant number, since it is smaller than the sum of its proper divisors (137347072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123805568 is an equidigital number, since it uses as much as digits as its factorization.

123805568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 835 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 123805568 is about 11126.7950461937. The cubic root of 123805568 is about 498.4023243023.

The spelling of 123805568 in words is "one hundred twenty-three million, eight hundred five thousand, five hundred sixty-eight".