65566079 has 2 divisors, whose sum is σ = 65566080. Its totient is φ = 65566078.

The previous prime is 65566073. The next prime is 65566091. The reversal of 65566079 is 97066556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65566079 - 2⁴ = 65566063 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65566073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32783039 + 32783040.

It is an arithmetic number, because the mean of its divisors is an integer number (32783040).

Almost surely, 2^65566079 is an apocalyptic number.

65566079 is a deficient number, since it is larger than the sum of its proper divisors (1).

65566079 is an equidigital number, since it uses as much as digits as its factorization.

65566079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 65566079 is about 8097.2883732766. The cubic root of 65566079 is about 403.2364081162.

The spelling of 65566079 in words is "sixty-five million, five hundred sixty-six thousand, seventy-nine".