65662913 has 2 divisors, whose sum is σ = 65662914. Its totient is φ = 65662912.

The previous prime is 65662847. The next prime is 65662921. The reversal of 65662913 is 31926656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41770369 + 23892544 = 6463^2 + 4888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65662913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65662963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32831456 + 32831457.

It is an arithmetic number, because the mean of its divisors is an integer number (32831457).

Almost surely, 2^65662913 is an apocalyptic number.

It is an amenable number.

65662913 is a deficient number, since it is larger than the sum of its proper divisors (1).

65662913 is an equidigital number, since it uses as much as digits as its factorization.

65662913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 38.

The square root of 65662913 is about 8103.2655762970. The cubic root of 65662913 is about 403.4348226418.

The spelling of 65662913 in words is "sixty-five million, six hundred sixty-two thousand, nine hundred thirteen".