65057789 has 2 divisors, whose sum is σ = 65057790. Its totient is φ = 65057788.

The previous prime is 65057771. The next prime is 65057801. The reversal of 65057789 is 98775056.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51122500 + 13935289 = 7150^2 + 3733^2 .

It is a cyclic number.

It is not a de Polignac number, because 65057789 - 2⁸ = 65057533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65057749) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32528894 + 32528895.

It is an arithmetic number, because the mean of its divisors is an integer number (32528895).

Almost surely, 2^65057789 is an apocalyptic number.

It is an amenable number.

65057789 is a deficient number, since it is larger than the sum of its proper divisors (1).

65057789 is an equidigital number, since it uses as much as digits as its factorization.

65057789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 65057789 is about 8065.8408737093. The cubic root of 65057789 is about 402.1916963184.

The spelling of 65057789 in words is "sixty-five million, fifty-seven thousand, seven hundred eighty-nine".