65566049 has 2 divisors, whose sum is σ = 65566050. Its totient is φ = 65566048.

The previous prime is 65566043. The next prime is 65566063. The reversal of 65566049 is 94066556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36481600 + 29084449 = 6040^2 + 5393^2 .

It is a cyclic number.

It is not a de Polignac number, because 65566049 - 2²⁴ = 48788833 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 65565997 and 65566015.

It is not a weakly prime, because it can be changed into another prime (65566043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32783024 + 32783025.

It is an arithmetic number, because the mean of its divisors is an integer number (32783025).

Almost surely, 2^65566049 is an apocalyptic number.

It is an amenable number.

65566049 is a deficient number, since it is larger than the sum of its proper divisors (1).

65566049 is an equidigital number, since it uses as much as digits as its factorization.

65566049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 65566049 is about 8097.2865208044. The cubic root of 65566049 is about 403.2363466154.

The spelling of 65566049 in words is "sixty-five million, five hundred sixty-six thousand, forty-nine".