6605727864 has 16 divisors (see below), whose sum is σ = 16514319720. Its totient is φ = 2201909280.

The previous prime is 6605727841. The next prime is 6605727883. The reversal of 6605727864 is 4687275066.

It is a super-2 number, since 2×6605727864² = 87271281226452004992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 137619307 + ... + 137619354.

Almost surely, 2^6605727864 is an apocalyptic number.

It is an amenable number.

6605727864 is an abundant number, since it is smaller than the sum of its proper divisors (9908591856).

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

6605727864 is a wasteful number, since it uses less digits than its factorization.

6605727864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275238670 (or 275238666 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The square root of 6605727864 is about 81275.6289671141. The cubic root of 6605727864 is about 1876.3199347361.

The spelling of 6605727864 in words is "six billion, six hundred five million, seven hundred twenty-seven thousand, eight hundred sixty-four".