65669893 has 2 divisors, whose sum is σ = 65669894. Its totient is φ = 65669892.

The previous prime is 65669869. The next prime is 65669917. The reversal of 65669893 is 39896656.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (65669869) and next prime (65669917).

It can be written as a sum of positive squares in only one way, i.e., 59706529 + 5963364 = 7727^2 + 2442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65669893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65669893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65669843) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32834946 + 32834947.

It is an arithmetic number, because the mean of its divisors is an integer number (32834947).

Almost surely, 2^65669893 is an apocalyptic number.

It is an amenable number.

65669893 is a deficient number, since it is larger than the sum of its proper divisors (1).

65669893 is an equidigital number, since it uses as much as digits as its factorization.

65669893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2099520, while the sum is 52.

The square root of 65669893 is about 8103.6962554133. The cubic root of 65669893 is about 403.4491172421.

The spelling of 65669893 in words is "sixty-five million, six hundred sixty-nine thousand, eight hundred ninety-three".