665102663 has 2 divisors, whose sum is σ = 665102664. Its totient is φ = 665102662.

The previous prime is 665102651. The next prime is 665102681. The reversal of 665102663 is 366201566.

665102663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 665102663 - 2²⁰ = 664054087 is a prime.

It is equal to p_34537454 and since 665102663 and 34537454 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665102623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332551331 + 332551332.

It is an arithmetic number, because the mean of its divisors is an integer number (332551332).

Almost surely, 2^665102663 is an apocalyptic number.

665102663 is a deficient number, since it is larger than the sum of its proper divisors (1).

665102663 is an equidigital number, since it uses as much as digits as its factorization.

665102663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 665102663 is about 25789.5843898268. The cubic root of 665102663 is about 872.8967882960.

The spelling of 665102663 in words is "six hundred sixty-five million, one hundred two thousand, six hundred sixty-three".