665708601463 has 2 divisors, whose sum is σ = 665708601464. Its totient is φ = 665708601462.

The previous prime is 665708601457. The next prime is 665708601479. The reversal of 665708601463 is 364106807566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 665708601463 - 2¹³ = 665708593271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 665708601463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665708601433) 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, 332854300731 + 332854300732.

It is an arithmetic number, because the mean of its divisors is an integer number (332854300732).

Almost surely, 2^665708601463 is an apocalyptic number.

665708601463 is a deficient number, since it is larger than the sum of its proper divisors (1).

665708601463 is an equidigital number, since it uses as much as digits as its factorization.

665708601463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 665708601463 in words is "six hundred sixty-five billion, seven hundred eight million, six hundred one thousand, four hundred sixty-three".