75785065 has 16 divisors (see below), whose sum is σ = 98898192. Its totient is φ = 55517184.

The previous prime is 75785063. The next prime is 75785077. The reversal of 75785065 is 56058757.

It can be written as a sum of positive squares in 8 ways, for example, as 15116544 + 60668521 = 3888^2 + 7789^2 .

It is a cyclic number.

It is not a de Polignac number, because 75785065 - 2¹ = 75785063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75785063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8904 + ... + 15193.

It is an arithmetic number, because the mean of its divisors is an integer number (6181137).

Almost surely, 2^75785065 is an apocalyptic number.

It is an amenable number.

75785065 is a deficient number, since it is larger than the sum of its proper divisors (23113127).

75785065 is a wasteful number, since it uses less digits than its factorization.

75785065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24156.

The product of its (nonzero) digits is 294000, while the sum is 43.

The square root of 75785065 is about 8705.4617913124. The cubic root of 75785065 is about 423.1826714299.

The spelling of 75785065 in words is "seventy-five million, seven hundred eighty-five thousand, sixty-five".