65720339 has 2 divisors, whose sum is σ = 65720340. Its totient is φ = 65720338.

The previous prime is 65720329. The next prime is 65720353. The reversal of 65720339 is 93302756.

65720339 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 is a cyclic number.

It is not a de Polignac number, because 65720339 - 2⁴ = 65720323 is a prime.

It is equal to p_3880538 and since 65720339 and 3880538 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 65720299 and 65720308.

It is not a weakly prime, because it can be changed into another prime (65720329) 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, 32860169 + 32860170.

It is an arithmetic number, because the mean of its divisors is an integer number (32860170).

Almost surely, 2^65720339 is an apocalyptic number.

65720339 is a deficient number, since it is larger than the sum of its proper divisors (1).

65720339 is an equidigital number, since it uses as much as digits as its factorization.

65720339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 35.

The square root of 65720339 is about 8106.8081881836. The cubic root of 65720339 is about 403.5523973707.

The spelling of 65720339 in words is "sixty-five million, seven hundred twenty thousand, three hundred thirty-nine".