64758385 has 4 divisors (see below), whose sum is σ = 77710068. Its totient is φ = 51806704.

The previous prime is 64758371. The next prime is 64758413. The reversal of 64758385 is 58385746.

64758385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47775744 + 16982641 = 6912^2 + 4121^2 .

It is a cyclic number.

It is not a de Polignac number, because 64758385 - 2⁹ = 64757873 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 3 ways as a sum of consecutive naturals, for example, 6475834 + ... + 6475843.

It is an arithmetic number, because the mean of its divisors is an integer number (19427517).

Almost surely, 2^64758385 is an apocalyptic number.

It is an amenable number.

64758385 is a deficient number, since it is larger than the sum of its proper divisors (12951683).

64758385 is a wasteful number, since it uses less digits than its factorization.

64758385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12951682.

The product of its digits is 806400, while the sum is 46.

The square root of 64758385 is about 8047.2594713977. The cubic root of 64758385 is about 401.5737687593.

The spelling of 64758385 in words is "sixty-four million, seven hundred fifty-eight thousand, three hundred eighty-five".