664114247 has 2 divisors, whose sum is σ = 664114248. Its totient is φ = 664114246.

The previous prime is 664114127. The next prime is 664114261. The reversal of 664114247 is 742411466.

664114247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664114247 - 2⁸ = 664113991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664111247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332057123 + 332057124.

It is an arithmetic number, because the mean of its divisors is an integer number (332057124).

Almost surely, 2^664114247 is an apocalyptic number.

664114247 is a deficient number, since it is larger than the sum of its proper divisors (1).

664114247 is an equidigital number, since it uses as much as digits as its factorization.

664114247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 35.

The square root of 664114247 is about 25770.4141798303. The cubic root of 664114247 is about 872.4641669123.

The spelling of 664114247 in words is "six hundred sixty-four million, one hundred fourteen thousand, two hundred forty-seven".