664841403703 has 2 divisors, whose sum is σ = 664841403704. Its totient is φ = 664841403702.

The previous prime is 664841403643. The next prime is 664841403727. The reversal of 664841403703 is 307304148466.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664841403703 is a prime.

It is a super-2 number, since 2×664841403703² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664841403403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332420701851 + 332420701852.

It is an arithmetic number, because the mean of its divisors is an integer number (332420701852).

Almost surely, 2^664841403703 is an apocalyptic number.

664841403703 is a deficient number, since it is larger than the sum of its proper divisors (1).

664841403703 is an equidigital number, since it uses as much as digits as its factorization.

664841403703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 664841403703 in words is "six hundred sixty-four billion, eight hundred forty-one million, four hundred three thousand, seven hundred three".