6546461664 has 48 divisors (see below), whose sum is σ = 17931618432. Its totient is φ = 2087276928.

The previous prime is 6546461639. The next prime is 6546461671. The reversal of 6546461664 is 4661646456.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1480234 + ... + 1484649.

It is an arithmetic number, because the mean of its divisors is an integer number (373575384).

Almost surely, 2^6546461664 is an apocalyptic number.

It is an amenable number.

6546461664 is an abundant number, since it is smaller than the sum of its proper divisors (11385156768).

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

6546461664 is a wasteful number, since it uses less digits than its factorization.

6546461664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2964919 (or 2964911 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 48.

The square root of 6546461664 is about 80910.2074153812. The cubic root of 6546461664 is about 1870.6916583159.

The spelling of 6546461664 in words is "six billion, five hundred forty-six million, four hundred sixty-one thousand, six hundred sixty-four".