6546564 has 72 divisors (see below), whose sum is σ = 18476640. Its totient is φ = 1942272.

The previous prime is 6546557. The next prime is 6546571. The reversal of 6546564 is 4656456.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6546557) and next prime (6546571).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11347 + ... + 11909.

It is an arithmetic number, because the mean of its divisors is an integer number (256620).

Almost surely, 2^6546564 is an apocalyptic number.

6546564 is the 1368-th nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6546564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9238320).

6546564 is an abundant number, since it is smaller than the sum of its proper divisors (11930076).

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

6546564 is a wasteful number, since it uses less digits than its factorization.

6546564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 604 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 6546564 is about 2558.6254122087. The cubic root of 6546564 is about 187.0701405979.

The spelling of 6546564 in words is "six million, five hundred forty-six thousand, five hundred sixty-four".