6665064724 has 12 divisors (see below), whose sum is σ = 11713924404. Its totient is φ = 3318229184.

The previous prime is 6665064719. The next prime is 6665064743. The reversal of 6665064724 is 4274605666.

It can be written as a sum of positive squares in 2 ways, for example, as 1437774724 + 5227290000 = 37918^2 + 72300^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3574747 + ... + 3576610.

It is an arithmetic number, because the mean of its divisors is an integer number (976160367).

Almost surely, 2^6665064724 is an apocalyptic number.

It is an amenable number.

6665064724 is a deficient number, since it is larger than the sum of its proper divisors (5048859680).

6665064724 is a wasteful number, since it uses less digits than its factorization.

6665064724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7151594 (or 7151592 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 46.

The square root of 6665064724 is about 81639.8476480695. The cubic root of 6665064724 is about 1881.9212971094.

The spelling of 6665064724 in words is "six billion, six hundred sixty-five million, sixty-four thousand, seven hundred twenty-four".