6490732560 has 80 divisors (see below), whose sum is σ = 21669071424. Its totient is φ = 1597718016.

The previous prime is 6490732553. The next prime is 6490732613. The reversal of 6490732560 is 652370946.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1037062 + ... + 1043301.

Almost surely, 2^6490732560 is an apocalyptic number.

6490732560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6490732560 is an abundant number, since it is smaller than the sum of its proper divisors (15178338864).

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

6490732560 is a wasteful number, since it uses less digits than its factorization.

6490732560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080392 (or 2080386 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 6490732560 is about 80565.0827592202. The cubic root of 6490732560 is about 1865.3682123668.

The spelling of 6490732560 in words is "six billion, four hundred ninety million, seven hundred thirty-two thousand, five hundred sixty".