6393687 has 8 divisors (see below), whose sum is σ = 8544000. Its totient is φ = 4252920.

The previous prime is 6393661. The next prime is 6393691. The reversal of 6393687 is 7863936.

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

It is not a de Polignac number, because 6393687 - 2⁶ = 6393623 is a prime.

6393687 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6393617) 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, 639 + ... + 3632.

It is an arithmetic number, because the mean of its divisors is an integer number (1068000).

Almost surely, 2^6393687 is an apocalyptic number.

6393687 is a deficient number, since it is larger than the sum of its proper divisors (2150313).

6393687 is a wasteful number, since it uses less digits than its factorization.

6393687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4773.

The product of its digits is 163296, while the sum is 42.

The square root of 6393687 is about 2528.5741041148. The cubic root of 6393687 is about 185.6024866981.

The spelling of 6393687 in words is "six million, three hundred ninety-three thousand, six hundred eighty-seven".