6720668670 has 16 divisors (see below), whose sum is σ = 16129604880. Its totient is φ = 1792178304.

The previous prime is 6720668663. The next prime is 6720668671. The reversal of 6720668670 is 768660276.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720668671) 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, 112011115 + ... + 112011174.

It is an arithmetic number, because the mean of its divisors is an integer number (1008100305).

Almost surely, 2^6720668670 is an apocalyptic number.

6720668670 is an abundant number, since it is smaller than the sum of its proper divisors (9408936210).

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

6720668670 is a wasteful number, since it uses less digits than its factorization.

6720668670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224022299.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The square root of 6720668670 is about 81979.6844956115. The cubic root of 6720668670 is about 1887.1401809323.

The spelling of 6720668670 in words is "six billion, seven hundred twenty million, six hundred sixty-eight thousand, six hundred seventy".