65015761 has 2 divisors, whose sum is σ = 65015762. Its totient is φ = 65015760.

The previous prime is 65015759. The next prime is 65015801. The reversal of 65015761 is 16751056.

65015761 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., 50908225 + 14107536 = 7135^2 + 3756^2 .

It is a cyclic number.

It is not a de Polignac number, because 65015761 - 2¹ = 65015759 is a prime.

Together with 65015759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (65015261) 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, 32507880 + 32507881.

It is an arithmetic number, because the mean of its divisors is an integer number (32507881).

Almost surely, 2^65015761 is an apocalyptic number.

It is an amenable number.

65015761 is a deficient number, since it is larger than the sum of its proper divisors (1).

65015761 is an equidigital number, since it uses as much as digits as its factorization.

65015761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 65015761 is about 8063.2351447790. The cubic root of 65015761 is about 402.1050710063.

The spelling of 65015761 in words is "sixty-five million, fifteen thousand, seven hundred sixty-one".