665062511 has 2 divisors, whose sum is σ = 665062512. Its totient is φ = 665062510.

The previous prime is 665062469. The next prime is 665062537. The reversal of 665062511 is 115260566.

665062511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665062511 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665062571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332531255 + 332531256.

It is an arithmetic number, because the mean of its divisors is an integer number (332531256).

Almost surely, 2^665062511 is an apocalyptic number.

665062511 is a deficient number, since it is larger than the sum of its proper divisors (1).

665062511 is an equidigital number, since it uses as much as digits as its factorization.

665062511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 665062511 is about 25788.8059242765. The cubic root of 665062511 is about 872.8792224579.

The spelling of 665062511 in words is "six hundred sixty-five million, sixty-two thousand, five hundred eleven".