6605458981 has 8 divisors (see below), whose sum is σ = 7260964128. Its totient is φ = 5959122000.

The previous prime is 6605458967. The next prime is 6605458991. The reversal of 6605458981 is 1898545066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6605458981 - 2⁵ = 6605458949 is a prime.

It is a super-2 number, since 2×6605458981² = 87264176699347116722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6605458901) 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 7 ways as a sum of consecutive naturals, for example, 2290530 + ... + 2293411.

It is an arithmetic number, because the mean of its divisors is an integer number (907620516).

Almost surely, 2^6605458981 is an apocalyptic number.

It is an amenable number.

6605458981 is a deficient number, since it is larger than the sum of its proper divisors (655505147).

6605458981 is a wasteful number, since it uses less digits than its factorization.

6605458981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4584083.

The product of its (nonzero) digits is 2073600, while the sum is 52.

The square root of 6605458981 is about 81273.9748074376. The cubic root of 6605458981 is about 1876.2944761548.

The spelling of 6605458981 in words is "six billion, six hundred five million, four hundred fifty-eight thousand, nine hundred eighty-one".