6388985 has 8 divisors (see below), whose sum is σ = 7680960. Its totient is φ = 5101744.

The previous prime is 6388981. The next prime is 6389017. The reversal of 6388985 is 5898836.

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 6388985 - 2² = 6388981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6388981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3434 + ... + 4956.

It is an arithmetic number, because the mean of its divisors is an integer number (960120).

Almost surely, 2^6388985 is an apocalyptic number.

It is an amenable number.

6388985 is a deficient number, since it is larger than the sum of its proper divisors (1291975).

6388985 is a wasteful number, since it uses less digits than its factorization.

6388985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367.

The product of its digits is 414720, while the sum is 47.

The square root of 6388985 is about 2527.6441600827. The cubic root of 6388985 is about 185.5569773849.

The spelling of 6388985 in words is "six million, three hundred eighty-eight thousand, nine hundred eighty-five".