75565705 has 4 divisors (see below), whose sum is σ = 90678852. Its totient is φ = 60452560.

The previous prime is 75565691. The next prime is 75565709. The reversal of 75565705 is 50756557.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50756557 = 4139 ⋅12263.

It can be written as a sum of positive squares in 2 ways, for example, as 20331081 + 55234624 = 4509^2 + 7432^2 .

It is not a de Polignac number, because 75565705 - 2¹³ = 75557513 is a prime.

It is a super-3 number, since 3×75565705³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75565709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7556566 + ... + 7556575.

It is an arithmetic number, because the mean of its divisors is an integer number (22669713).

Almost surely, 2^75565705 is an apocalyptic number.

It is an amenable number.

75565705 is a deficient number, since it is larger than the sum of its proper divisors (15113147).

75565705 is a wasteful number, since it uses less digits than its factorization.

75565705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15113146.

The product of its (nonzero) digits is 183750, while the sum is 40.

The square root of 75565705 is about 8692.8536741395. The cubic root of 75565705 is about 422.7739758643.

The spelling of 75565705 in words is "seventy-five million, five hundred sixty-five thousand, seven hundred five".