665329463 has 2 divisors, whose sum is σ = 665329464. Its totient is φ = 665329462.

The previous prime is 665329451. The next prime is 665329507. The reversal of 665329463 is 364923566.

It is an a-pointer prime, because the next prime (665329507) can be obtained adding 665329463 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 665329463 - 2⁸ = 665329207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665329163) 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, 332664731 + 332664732.

It is an arithmetic number, because the mean of its divisors is an integer number (332664732).

Almost surely, 2^665329463 is an apocalyptic number.

665329463 is a deficient number, since it is larger than the sum of its proper divisors (1).

665329463 is an equidigital number, since it uses as much as digits as its factorization.

665329463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 44.

The square root of 665329463 is about 25793.9811390177. The cubic root of 665329463 is about 872.9959962850.

The spelling of 665329463 in words is "six hundred sixty-five million, three hundred twenty-nine thousand, four hundred sixty-three".