6438085 has 8 divisors (see below), whose sum is σ = 7797240. Its totient is φ = 5102784.

The previous prime is 6438079. The next prime is 6438101. The reversal of 6438085 is 5808346.

It can be written as a sum of positive squares in 4 ways, for example, as 835396 + 5602689 = 914^2 + 2367^2 .

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 6438085 - 2³ = 6438077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6438085.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5362 + ... + 6451.

It is an arithmetic number, because the mean of its divisors is an integer number (974655).

Almost surely, 2^6438085 is an apocalyptic number.

It is an amenable number.

6438085 is a deficient number, since it is larger than the sum of its proper divisors (1359155).

6438085 is a wasteful number, since it uses less digits than its factorization.

6438085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11927.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 6438085 is about 2537.3381721797. The cubic root of 6438085 is about 186.0311062941.

The spelling of 6438085 in words is "six million, four hundred thirty-eight thousand, eighty-five".