6546640652 has 6 divisors (see below), whose sum is σ = 11456621148. Its totient is φ = 3273320324.

The previous prime is 6546640631. The next prime is 6546640691. The reversal of 6546640652 is 2560466456.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 818330078 + ... + 818330085.

It is an arithmetic number, because the mean of its divisors is an integer number (1909436858).

Almost surely, 2^6546640652 is an apocalyptic number.

It is an amenable number.

6546640652 is a deficient number, since it is larger than the sum of its proper divisors (4909980496).

6546640652 is a wasteful number, since it uses less digits than its factorization.

6546640652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636660167 (or 1636660165 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The square root of 6546640652 is about 80911.3134981753. The cubic root of 6546640652 is about 1870.7087071342.

The spelling of 6546640652 in words is "six billion, five hundred forty-six million, six hundred forty thousand, six hundred fifty-two".