123080685 has 64 divisors (see below), whose sum is σ = 249027072. Its totient is φ = 50512896.

The previous prime is 123080627. The next prime is 123080687. The reversal of 123080685 is 586080321.

123080685 = T₁₅₉₉ + T₁₆₀₀ + ... + T₁₆₈₉.

It is a happy number.

It is not a de Polignac number, because 123080685 - 2⁷ = 123080557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123080687) 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 63 ways as a sum of consecutive naturals, for example, 49287 + ... + 51723.

It is an arithmetic number, because the mean of its divisors is an integer number (3891048).

Almost surely, 2^123080685 is an apocalyptic number.

123080685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123080685 is an abundant number, since it is smaller than the sum of its proper divisors (125946387).

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

123080685 is a wasteful number, since it uses less digits than its factorization.

123080685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 123080685 is about 11094.1734707909. The cubic root of 123080685 is about 497.4277025990.

The spelling of 123080685 in words is "one hundred twenty-three million, eighty thousand, six hundred eighty-five".