65072389 has 2 divisors, whose sum is σ = 65072390. Its totient is φ = 65072388.

The previous prime is 65072383. The next prime is 65072429. The reversal of 65072389 is 98327056.

65072389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (65072429) can be obtained adding 65072389 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45562500 + 19509889 = 6750^2 + 4417^2 .

It is a cyclic number.

It is not a de Polignac number, because 65072389 - 2¹⁹ = 64548101 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65072383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32536194 + 32536195.

It is an arithmetic number, because the mean of its divisors is an integer number (32536195).

Almost surely, 2^65072389 is an apocalyptic number.

It is an amenable number.

65072389 is a deficient number, since it is larger than the sum of its proper divisors (1).

65072389 is an equidigital number, since it uses as much as digits as its factorization.

65072389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 65072389 is about 8066.7458742668. The cubic root of 65072389 is about 402.2217801339.

The spelling of 65072389 in words is "sixty-five million, seventy-two thousand, three hundred eighty-nine".