664341463 has 2 divisors, whose sum is σ = 664341464. Its totient is φ = 664341462.

The previous prime is 664341421. The next prime is 664341467. The reversal of 664341463 is 364143466.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664341463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664341467) 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 as a sum of consecutive naturals, namely, 332170731 + 332170732.

It is an arithmetic number, because the mean of its divisors is an integer number (332170732).

Almost surely, 2^664341463 is an apocalyptic number.

664341463 is a deficient number, since it is larger than the sum of its proper divisors (1).

664341463 is an equidigital number, since it uses as much as digits as its factorization.

664341463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 37.

The square root of 664341463 is about 25774.8222690284. The cubic root of 664341463 is about 872.5636554242.

The spelling of 664341463 in words is "six hundred sixty-four million, three hundred forty-one thousand, four hundred sixty-three".