65021773 has 2 divisors, whose sum is σ = 65021774. Its totient is φ = 65021772.

The previous prime is 65021767. The next prime is 65021783. The reversal of 65021773 is 37712056.

65021773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64208169 + 813604 = 8013^2 + 902^2 .

It is a cyclic number.

It is not a de Polignac number, because 65021773 - 2⁹ = 65021261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65021783) 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, 32510886 + 32510887.

It is an arithmetic number, because the mean of its divisors is an integer number (32510887).

Almost surely, 2^65021773 is an apocalyptic number.

It is an amenable number.

65021773 is a deficient number, since it is larger than the sum of its proper divisors (1).

65021773 is an equidigital number, since it uses as much as digits as its factorization.

65021773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 65021773 is about 8063.6079393780. The cubic root of 65021773 is about 402.1174648276.

The spelling of 65021773 in words is "sixty-five million, twenty-one thousand, seven hundred seventy-three".