6386971 has 4 divisors (see below), whose sum is σ = 6522912. Its totient is φ = 6251032.

The previous prime is 6386959. The next prime is 6386981. The reversal of 6386971 is 1796836.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6386971 - 2¹⁵ = 6354203 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6386981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67900 + ... + 67993.

It is an arithmetic number, because the mean of its divisors is an integer number (1630728).

Almost surely, 2^6386971 is an apocalyptic number.

6386971 is a deficient number, since it is larger than the sum of its proper divisors (135941).

6386971 is a wasteful number, since it uses less digits than its factorization.

6386971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135940.

The product of its digits is 54432, while the sum is 40.

The square root of 6386971 is about 2527.2457339958. The cubic root of 6386971 is about 185.5374776247.

The spelling of 6386971 in words is "six million, three hundred eighty-six thousand, nine hundred seventy-one".