65396789 has 2 divisors, whose sum is σ = 65396790. Its totient is φ = 65396788.

The previous prime is 65396777. The next prime is 65396861. The reversal of 65396789 is 98769356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34316164 + 31080625 = 5858^2 + 5575^2 .

It is a cyclic number.

It is not a de Polignac number, because 65396789 - 2⁸ = 65396533 is a prime.

It is a super-3 number, since 3×65396789³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65396789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65396759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32698394 + 32698395.

It is an arithmetic number, because the mean of its divisors is an integer number (32698395).

Almost surely, 2^65396789 is an apocalyptic number.

It is an amenable number.

65396789 is a deficient number, since it is larger than the sum of its proper divisors (1).

65396789 is an equidigital number, since it uses as much as digits as its factorization.

65396789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 53.

The square root of 65396789 is about 8086.8281173770. The cubic root of 65396789 is about 402.8890601741.

The spelling of 65396789 in words is "sixty-five million, three hundred ninety-six thousand, seven hundred eighty-nine".