6463971 has 24 divisors (see below), whose sum is σ = 9950720. Its totient is φ = 4031856.

The previous prime is 6463969. The next prime is 6463973. The reversal of 6463971 is 1793646.

6463971 is a `hidden beast` number, since 646 + 3 + 9 + 7 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (6463969) and next prime (6463973).

It is not a de Polignac number, because 6463971 - 2¹ = 6463969 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6463973) 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 23 ways as a sum of consecutive naturals, for example, 17430 + ... + 17796.

Almost surely, 2^6463971 is an apocalyptic number.

6463971 is a deficient number, since it is larger than the sum of its proper divisors (3486749).

6463971 is a wasteful number, since it uses less digits than its factorization.

6463971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 492 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 6463971 is about 2542.4340699416. The cubic root of 6463971 is about 186.2801017365.

The spelling of 6463971 in words is "six million, four hundred sixty-three thousand, nine hundred seventy-one".