6138785 has 8 divisors (see below), whose sum is σ = 7799976. Its totient is φ = 4622080.

The previous prime is 6138779. The next prime is 6138787. The reversal of 6138785 is 5878316.

It can be written as a sum of positive squares in 4 ways, for example, as 602176 + 5536609 = 776^2 + 2353^2 .

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

It is not a de Polignac number, because 6138785 - 2¹⁸ = 5876641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6138787) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36026 + ... + 36195.

It is an arithmetic number, because the mean of its divisors is an integer number (974997).

Almost surely, 2^6138785 is an apocalyptic number.

It is an amenable number.

6138785 is a deficient number, since it is larger than the sum of its proper divisors (1661191).

6138785 is a wasteful number, since it uses less digits than its factorization.

6138785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72243.

The product of its digits is 40320, while the sum is 38.

The square root of 6138785 is about 2477.6571594956. The cubic root of 6138785 is about 183.1024439597.

The spelling of 6138785 in words is "six million, one hundred thirty-eight thousand, seven hundred eighty-five".