6581061 has 16 divisors (see below), whose sum is σ = 9889920. Its totient is φ = 4324320.

The previous prime is 6581051. The next prime is 6581077. The reversal of 6581061 is 1601856.

6581061 is a `hidden beast` number, since 658 + 1 + 0 + 6 + 1 = 666.

It is not a de Polignac number, because 6581061 - 2⁶ = 6580997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6581041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201 + ... + 3633.

It is an arithmetic number, because the mean of its divisors is an integer number (618120).

Almost surely, 2^6581061 is an apocalyptic number.

It is an amenable number.

6581061 is a deficient number, since it is larger than the sum of its proper divisors (3308859).

6581061 is a wasteful number, since it uses less digits than its factorization.

6581061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513 (or 3507 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 6581061 is about 2565.3578697718. The cubic root of 6581061 is about 187.3981526880.

The spelling of 6581061 in words is "six million, five hundred eighty-one thousand, sixty-one".