65757389 has 2 divisors, whose sum is σ = 65757390. Its totient is φ = 65757388.

The previous prime is 65757379. The next prime is 65757401. The reversal of 65757389 is 98375756.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65334889 + 422500 = 8083^2 + 650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65757389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65757379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32878694 + 32878695.

It is an arithmetic number, because the mean of its divisors is an integer number (32878695).

Almost surely, 2^65757389 is an apocalyptic number.

It is an amenable number.

65757389 is a deficient number, since it is larger than the sum of its proper divisors (1).

65757389 is an equidigital number, since it uses as much as digits as its factorization.

65757389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 50.

The square root of 65757389 is about 8109.0929825721. The cubic root of 65757389 is about 403.6282176711.

The spelling of 65757389 in words is "sixty-five million, seven hundred fifty-seven thousand, three hundred eighty-nine".