6549430660 has 12 divisors (see below), whose sum is σ = 13753804428. Its totient is φ = 2619772256.

The previous prime is 6549430637. The next prime is 6549430681. The reversal of 6549430660 is 660349456.

It can be written as a sum of positive squares in 2 ways, for example, as 1351885824 + 5197544836 = 36768^2 + 72094^2 .

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 3 ways as a sum of consecutive naturals, for example, 163735747 + ... + 163735786.

It is an arithmetic number, because the mean of its divisors is an integer number (1146150369).

Almost surely, 2^6549430660 is an apocalyptic number.

It is an amenable number.

6549430660 is an abundant number, since it is smaller than the sum of its proper divisors (7204373768).

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

6549430660 is a wasteful number, since it uses less digits than its factorization.

6549430660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327471542 (or 327471540 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 43.

The square root of 6549430660 is about 80928.5528104883. The cubic root of 6549430660 is about 1870.9744185257.

The spelling of 6549430660 in words is "six billion, five hundred forty-nine million, four hundred thirty thousand, six hundred sixty".