6581356223 has 4 divisors (see below), whose sum is σ = 7087614408. Its totient is φ = 6075098040.

The previous prime is 6581356219. The next prime is 6581356277. The reversal of 6581356223 is 3226531856.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6581356223 - 2² = 6581356219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6581356213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253129073 + ... + 253129098.

It is an arithmetic number, because the mean of its divisors is an integer number (1771903602).

Almost surely, 2^6581356223 is an apocalyptic number.

6581356223 is a deficient number, since it is larger than the sum of its proper divisors (506258185).

6581356223 is a wasteful number, since it uses less digits than its factorization.

6581356223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506258184.

The product of its digits is 259200, while the sum is 41.

The square root of 6581356223 is about 81125.5583832863. The cubic root of 6581356223 is about 1874.0095484092.

The spelling of 6581356223 in words is "six billion, five hundred eighty-one million, three hundred fifty-six thousand, two hundred twenty-three".