664014343 has 2 divisors, whose sum is σ = 664014344. Its totient is φ = 664014342.

The previous prime is 664014319. The next prime is 664014349. The reversal of 664014343 is 343410466.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664014343 - 2¹⁷ = 663883271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664014349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332007171 + 332007172.

It is an arithmetic number, because the mean of its divisors is an integer number (332007172).

Almost surely, 2^664014343 is an apocalyptic number.

664014343 is a deficient number, since it is larger than the sum of its proper divisors (1).

664014343 is an equidigital number, since it uses as much as digits as its factorization.

664014343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 664014343 is about 25768.4757601221. The cubic root of 664014343 is about 872.4204158903.

The spelling of 664014343 in words is "six hundred sixty-four million, fourteen thousand, three hundred forty-three".