6477564 has 12 divisors (see below), whose sum is σ = 15114344. Its totient is φ = 2159184.

The previous prime is 6477533. The next prime is 6477577. The reversal of 6477564 is 4657746.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269887 + ... + 269910.

Almost surely, 2^6477564 is an apocalyptic number.

It is an amenable number.

6477564 is an abundant number, since it is smaller than the sum of its proper divisors (8636780).

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

6477564 is a wasteful number, since it uses less digits than its factorization.

6477564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539804 (or 539802 counting only the distinct ones).

The product of its digits is 141120, while the sum is 39.

The square root of 6477564 is about 2545.1058917067. The cubic root of 6477564 is about 186.4105856440.

The spelling of 6477564 in words is "six million, four hundred seventy-seven thousand, five hundred sixty-four".