64783073 has 4 divisors (see below), whose sum is σ = 68593860. Its totient is φ = 60972288.

The previous prime is 64783051. The next prime is 64783091. The reversal of 64783073 is 37038746.

64783073 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, and also an emirpimes, since its reverse is a distinct semiprime: 37038746 = 2 ⋅18519373.

It can be written as a sum of positive squares in 2 ways, for example, as 49674304 + 15108769 = 7048^2 + 3887^2 .

It is a cyclic number.

It is not a de Polignac number, because 64783073 - 2⁶ = 64783009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64780073) 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 in 3 ways as a sum of consecutive naturals, for example, 1905368 + ... + 1905401.

It is an arithmetic number, because the mean of its divisors is an integer number (17148465).

Almost surely, 2^64783073 is an apocalyptic number.

It is an amenable number.

64783073 is a deficient number, since it is larger than the sum of its proper divisors (3810787).

64783073 is a wasteful number, since it uses less digits than its factorization.

64783073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810786.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 64783073 is about 8048.7932635893. The cubic root of 64783073 is about 401.6247932643.

The spelling of 64783073 in words is "sixty-four million, seven hundred eighty-three thousand, seventy-three".