66536065 has 8 divisors (see below), whose sum is σ = 79890408. Its totient is φ = 53197440.

The previous prime is 66536059. The next prime is 66536077. The reversal of 66536065 is 56063566.

It is a happy number.

66536065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8288641 + 58247424 = 2879^2 + 7632^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66536065 - 2¹⁷ = 66404993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 9675 + ... + 15055.

It is an arithmetic number, because the mean of its divisors is an integer number (9986301).

Almost surely, 2^66536065 is an apocalyptic number.

It is an amenable number.

66536065 is a deficient number, since it is larger than the sum of its proper divisors (13354343).

66536065 is a wasteful number, since it uses less digits than its factorization.

66536065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 66536065 is about 8156.9642024469. The cubic root of 66536065 is about 405.2151780391.

The spelling of 66536065 in words is "sixty-six million, five hundred thirty-six thousand, sixty-five".