6591006591 has 32 divisors (see below), whose sum is σ = 9615238080. Its totient is φ = 4015440000.

The previous prime is 6591006563. The next prime is 6591006593. The reversal of 6591006591 is 1956001956.

It is not a de Polignac number, because 6591006591 - 2¹¹ = 6591004543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6591006593) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 660741 + ... + 670641.

It is an arithmetic number, because the mean of its divisors is an integer number (300476190).

Almost surely, 2^6591006591 is an apocalyptic number.

6591006591 is a deficient number, since it is larger than the sum of its proper divisors (3024231489).

6591006591 is a wasteful number, since it uses less digits than its factorization.

6591006591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10044 (or 10018 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 42.

The square root of 6591006591 is about 81185.0145716560. The cubic root of 6591006591 is about 1874.9250663742.

It can be divided in two parts, 659100 and 6591, that multiplied together give a square (4344128100 = 65910²).

The spelling of 6591006591 in words is "six billion, five hundred ninety-one million, six thousand, five hundred ninety-one".