6664701313 has 2 divisors, whose sum is σ = 6664701314. Its totient is φ = 6664701312.

The previous prime is 6664701289. The next prime is 6664701349. The reversal of 6664701313 is 3131074666.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3371892624 + 3292808689 = 58068^2 + 57383^2 .

It is a cyclic number.

It is not a de Polignac number, because 6664701313 - 2²¹ = 6662604161 is a prime.

It is not a weakly prime, because it can be changed into another prime (6664708313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332350656 + 3332350657.

It is an arithmetic number, because the mean of its divisors is an integer number (3332350657).

Almost surely, 2^6664701313 is an apocalyptic number.

It is an amenable number.

6664701313 is a deficient number, since it is larger than the sum of its proper divisors (1).

6664701313 is an equidigital number, since it uses as much as digits as its factorization.

6664701313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 6664701313 is about 81637.6219215136. The cubic root of 6664701313 is about 1881.8870927238.

Adding to 6664701313 its reverse (3131074666), we get a palindrome (9795775979).

The spelling of 6664701313 in words is "six billion, six hundred sixty-four million, seven hundred one thousand, three hundred thirteen".