123087685 has 16 divisors (see below), whose sum is σ = 169001856. Its totient is φ = 84305088.

The previous prime is 123087683. The next prime is 123087703. The reversal of 123087685 is 586780321.

It is not a de Polignac number, because 123087685 - 2¹ = 123087683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123087683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41874 + ... + 44716.

It is an arithmetic number, because the mean of its divisors is an integer number (10562616).

Almost surely, 2^123087685 is an apocalyptic number.

It is an amenable number.

123087685 is a deficient number, since it is larger than the sum of its proper divisors (45914171).

123087685 is a wasteful number, since it uses less digits than its factorization.

123087685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 123087685 is about 11094.4889472206. The cubic root of 123087685 is about 497.4371325322.

The spelling of 123087685 in words is "one hundred twenty-three million, eighty-seven thousand, six hundred eighty-five".