6713640066 has 16 divisors (see below), whose sum is σ = 15345463104. Its totient is φ = 1918182864.

The previous prime is 6713640029. The next prime is 6713640067. The reversal of 6713640066 is 6600463176.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6713640067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79924245 + ... + 79924328.

It is an arithmetic number, because the mean of its divisors is an integer number (959091444).

Almost surely, 2^6713640066 is an apocalyptic number.

6713640066 is an abundant number, since it is smaller than the sum of its proper divisors (8631823038).

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

6713640066 is a wasteful number, since it uses less digits than its factorization.

6713640066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159848585.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 6713640066 is about 81936.8053197097. The cubic root of 6713640066 is about 1886.4820823479.

The spelling of 6713640066 in words is "six billion, seven hundred thirteen million, six hundred forty thousand, sixty-six".