123685216 has 24 divisors (see below), whose sum is σ = 247143960. Its totient is φ = 60918528.

The previous prime is 123685207. The next prime is 123685223. The reversal of 123685216 is 612586321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26701 + ... + 30988.

It is an arithmetic number, because the mean of its divisors is an integer number (10297665).

Almost surely, 2^123685216 is an apocalyptic number.

123685216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123685216 is a deficient number, since it is larger than the sum of its proper divisors (123458744).

123685216 is an equidigital number, since it uses as much as digits as its factorization.

123685216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57766 (or 57758 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 123685216 is about 11121.3855251942. The cubic root of 123685216 is about 498.2407721610.

The spelling of 123685216 in words is "one hundred twenty-three million, six hundred eighty-five thousand, two hundred sixteen".