6561066 has 32 divisors (see below), whose sum is σ = 13608000. Its totient is φ = 2107520.

The previous prime is 6561019. The next prime is 6561073. The reversal of 6561066 is 6601656.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36565 + ... + 36743.

It is an arithmetic number, because the mean of its divisors is an integer number (425250).

Almost surely, 2^6561066 is an apocalyptic number.

6561066 is an abundant number, since it is smaller than the sum of its proper divisors (7046934).

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

6561066 is a wasteful number, since it uses less digits than its factorization.

6561066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 6561066 is about 2561.4577880574. The cubic root of 6561066 is about 187.2081718071.

The spelling of 6561066 in words is "six million, five hundred sixty-one thousand, sixty-six".