6423985 has 8 divisors (see below), whose sum is σ = 7888320. Its totient is φ = 5019504.

The previous prime is 6423953. The next prime is 6423997. The reversal of 6423985 is 5893246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6423985 - 2⁵ = 6423953 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 4¹¹ + 2¹⁷ + 3³ + 9 + 8⁷ + 5³ .

6423985 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14725 + ... + 15154.

It is an arithmetic number, because the mean of its divisors is an integer number (986040).

Almost surely, 2^6423985 is an apocalyptic number.

It is an amenable number.

6423985 is a deficient number, since it is larger than the sum of its proper divisors (1464335).

6423985 is a wasteful number, since it uses less digits than its factorization.

6423985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29927.

The product of its digits is 51840, while the sum is 37.

The square root of 6423985 is about 2534.5581468966. The cubic root of 6423985 is about 185.8951986015.

The spelling of 6423985 in words is "six million, four hundred twenty-three thousand, nine hundred eighty-five".