6490724664 has 16 divisors (see below), whose sum is σ = 16226811720. Its totient is φ = 2163574880.

The previous prime is 6490724651. The next prime is 6490724687. The reversal of 6490724664 is 4664270946.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 135223407 + ... + 135223454.

Almost surely, 2^6490724664 is an apocalyptic number.

It is an amenable number.

6490724664 is an abundant number, since it is smaller than the sum of its proper divisors (9736087056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6490724664 is a wasteful number, since it uses less digits than its factorization.

6490724664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270446870 (or 270446866 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 48.

The square root of 6490724664 is about 80565.0337553457. The cubic root of 6490724664 is about 1865.3674559574.

The spelling of 6490724664 in words is "six billion, four hundred ninety million, seven hundred twenty-four thousand, six hundred sixty-four".