6490791 has 6 divisors (see below), whose sum is σ = 9375600. Its totient is φ = 4327188.

The previous prime is 6490777. The next prime is 6490793. The reversal of 6490791 is 1970946.

6490791 is a `hidden beast` number, since 649 + 0 + 7 + 9 + 1 = 666.

It is not a de Polignac number, because 6490791 - 2⁷ = 6490663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6490793) 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 5 ways as a sum of consecutive naturals, for example, 360591 + ... + 360608.

It is an arithmetic number, because the mean of its divisors is an integer number (1562600).

Almost surely, 2^6490791 is an apocalyptic number.

6490791 is a deficient number, since it is larger than the sum of its proper divisors (2884809).

6490791 is a wasteful number, since it uses less digits than its factorization.

6490791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721205 (or 721202 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 6490791 is about 2547.7030831712. The cubic root of 6490791 is about 186.5373810697.

The spelling of 6490791 in words is "six million, four hundred ninety thousand, seven hundred ninety-one".