65966653 has 2 divisors, whose sum is σ = 65966654. Its totient is φ = 65966652.

The previous prime is 65966627. The next prime is 65966683. The reversal of 65966653 is 35666956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61183684 + 4782969 = 7822^2 + 2187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65966653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65966603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32983326 + 32983327.

It is an arithmetic number, because the mean of its divisors is an integer number (32983327).

Almost surely, 2^65966653 is an apocalyptic number.

It is an amenable number.

65966653 is a deficient number, since it is larger than the sum of its proper divisors (1).

65966653 is an equidigital number, since it uses as much as digits as its factorization.

65966653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 874800, while the sum is 46.

The square root of 65966653 is about 8121.9857793522. The cubic root of 65966653 is about 404.0559283582.

The spelling of 65966653 in words is "sixty-five million, nine hundred sixty-six thousand, six hundred fifty-three".