140605565 has 4 divisors (see below), whose sum is σ = 168726684. Its totient is φ = 112484448.

The previous prime is 140605559. The next prime is 140605573. The reversal of 140605565 is 565506041.

140605565 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: 565506041 = 20899 ⋅27059.

It can be written as a sum of positive squares in 2 ways, for example, as 15031129 + 125574436 = 3877^2 + 11206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140605565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14060552 + ... + 14060561.

It is an arithmetic number, because the mean of its divisors is an integer number (42181671).

Almost surely, 2^140605565 is an apocalyptic number.

It is an amenable number.

140605565 is a deficient number, since it is larger than the sum of its proper divisors (28121119).

140605565 is an equidigital number, since it uses as much as digits as its factorization.

140605565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28121118.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 140605565 is about 11857.7217457655. The cubic root of 140605565 is about 519.9969982568.

The spelling of 140605565 in words is "one hundred forty million, six hundred five thousand, five hundred sixty-five".