12401685 has 12 divisors (see below), whose sum is σ = 21496332. Its totient is φ = 6614208.

The previous prime is 12401671. The next prime is 12401713. The reversal of 12401685 is 58610421.

It can be written as a sum of positive squares in 2 ways, for example, as 3651921 + 8749764 = 1911^2 + 2958^2 .

It is not a de Polignac number, because 12401685 - 2⁸ = 12401429 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137752 + ... + 137841.

It is an arithmetic number, because the mean of its divisors is an integer number (1791361).

Almost surely, 2^12401685 is an apocalyptic number.

12401685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12401685 is a deficient number, since it is larger than the sum of its proper divisors (9094647).

12401685 is a wasteful number, since it uses less digits than its factorization.

12401685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275604 (or 275601 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12401685 is about 3521.6026181272. The cubic root of 12401685 is about 231.4693890706.

The spelling of 12401685 in words is "twelve million, four hundred one thousand, six hundred eighty-five".