6385881 has 16 divisors (see below), whose sum is σ = 9354240. Its totient is φ = 3857040.

The previous prime is 6385879. The next prime is 6385891. The reversal of 6385881 is 1885836.

It is a happy number.

It is not a de Polignac number, because 6385881 - 2¹ = 6385879 is a prime.

It is a super-2 number, since 2×6385881² = 81558952292322, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6385871) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1125 + ... + 3746.

It is an arithmetic number, because the mean of its divisors is an integer number (584640).

Almost surely, 2^6385881 is an apocalyptic number.

It is an amenable number.

6385881 is a deficient number, since it is larger than the sum of its proper divisors (2968359).

6385881 is a wasteful number, since it uses less digits than its factorization.

6385881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916.

The product of its digits is 46080, while the sum is 39.

The square root of 6385881 is about 2527.0300750090. The cubic root of 6385881 is about 185.5269224201.

The spelling of 6385881 in words is "six million, three hundred eighty-five thousand, eight hundred eighty-one".