123660860 has 24 divisors (see below), whose sum is σ = 268066176. Its totient is φ = 47868480.

The previous prime is 123660853. The next prime is 123660869. The reversal of 123660860 is 68066321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123660869) 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 7 ways as a sum of consecutive naturals, for example, 99107 + ... + 100346.

It is an arithmetic number, because the mean of its divisors is an integer number (11169424).

Almost surely, 2^123660860 is an apocalyptic number.

123660860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123660860 is an abundant number, since it is smaller than the sum of its proper divisors (144405316).

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

123660860 is a wasteful number, since it uses less digits than its factorization.

123660860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199493 (or 199491 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 123660860 is about 11120.2904638323. The cubic root of 123660860 is about 498.2080656143.

The spelling of 123660860 in words is "one hundred twenty-three million, six hundred sixty thousand, eight hundred sixty".