6664056723 has 12 divisors (see below), whose sum is σ = 9636723408. Its totient is φ = 4437690480.

The previous prime is 6664056671. The next prime is 6664056739. The reversal of 6664056723 is 3276504666.

6664056723 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-6664056723 is a prime.

It is a super-2 number, since 2×6664056723² = 88819304014722997458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6664056793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 409408 + ... + 425373.

It is an arithmetic number, because the mean of its divisors is an integer number (803060284).

Almost surely, 2^6664056723 is an apocalyptic number.

6664056723 is a deficient number, since it is larger than the sum of its proper divisors (2972666685).

6664056723 is a wasteful number, since it uses less digits than its factorization.

6664056723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835674 (or 835671 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The square root of 6664056723 is about 81633.6739526037. The cubic root of 6664056723 is about 1881.8264206019.

The spelling of 6664056723 in words is "six billion, six hundred sixty-four million, fifty-six thousand, seven hundred twenty-three".