6497645732 has 6 divisors (see below), whose sum is σ = 11370880038. Its totient is φ = 3248822864.

The previous prime is 6497645731. The next prime is 6497645747. The reversal of 6497645732 is 2375467946.

It can be written as a sum of positive squares in only one way, i.e., 4798887076 + 1698758656 = 69274^2 + 41216^2 .

It is not an unprimeable number, because it can be changed into a prime (6497645731) 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 as a sum of consecutive naturals, namely, 812205713 + ... + 812205720.

It is an arithmetic number, because the mean of its divisors is an integer number (1895146673).

Almost surely, 2^6497645732 is an apocalyptic number.

It is an amenable number.

6497645732 is a deficient number, since it is larger than the sum of its proper divisors (4873234306).

6497645732 is a wasteful number, since it uses less digits than its factorization.

6497645732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624411437 (or 1624411435 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 53.

The square root of 6497645732 is about 80607.9756103576. The cubic root of 6497645732 is about 1866.0302350061.

The spelling of 6497645732 in words is "six billion, four hundred ninety-seven million, six hundred forty-five thousand, seven hundred thirty-two".