6423685 has 4 divisors (see below), whose sum is σ = 7708428. Its totient is φ = 5138944.

The previous prime is 6423673. The next prime is 6423707. The reversal of 6423685 is 5863246.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3621409 + 2802276 = 1903^2 + 1674^2 .

It is a cyclic number.

It is not a de Polignac number, because 6423685 - 2⁹ = 6423173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6423685.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642364 + ... + 642373.

It is an arithmetic number, because the mean of its divisors is an integer number (1927107).

Almost surely, 2^6423685 is an apocalyptic number.

It is an amenable number.

6423685 is a deficient number, since it is larger than the sum of its proper divisors (1284743).

6423685 is a wasteful number, since it uses less digits than its factorization.

6423685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284742.

The product of its digits is 34560, while the sum is 34.

The square root of 6423685 is about 2534.4989642925. The cubic root of 6423685 is about 185.8923047888.

The spelling of 6423685 in words is "six million, four hundred twenty-three thousand, six hundred eighty-five".