6463791 has 24 divisors (see below), whose sum is σ = 10024560. Its totient is φ = 3998976.

The previous prime is 6463777. The next prime is 6463811. The reversal of 6463791 is 1973646.

6463791 is a `hidden beast` number, since 646 + 3 + 7 + 9 + 1 = 666.

It is not a de Polignac number, because 6463791 - 2⁶ = 6463727 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6463741) 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, 12445 + ... + 12953.

It is an arithmetic number, because the mean of its divisors is an integer number (417690).

Almost surely, 2^6463791 is an apocalyptic number.

6463791 is a deficient number, since it is larger than the sum of its proper divisors (3560769).

6463791 is a wasteful number, since it uses less digits than its factorization.

6463791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615 (or 612 counting only the distinct ones).

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

The square root of 6463791 is about 2542.3986705472. The cubic root of 6463791 is about 186.2783726276.

The spelling of 6463791 in words is "six million, four hundred sixty-three thousand, seven hundred ninety-one".