5645765 has 4 divisors (see below), whose sum is σ = 6774924. Its totient is φ = 4516608.

The previous prime is 5645729. The next prime is 5645779. The reversal of 5645765 is 5675465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5675465 = 5 ⋅1135093.

It can be written as a sum of positive squares in 2 ways, for example, as 2979076 + 2666689 = 1726^2 + 1633^2 .

It is a cyclic number.

It is not a de Polignac number, because 5645765 - 2⁶ = 5645701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 564572 + ... + 564581.

It is an arithmetic number, because the mean of its divisors is an integer number (1693731).

Almost surely, 2^5645765 is an apocalyptic number.

It is an amenable number.

5645765 is a deficient number, since it is larger than the sum of its proper divisors (1129159).

5645765 is a wasteful number, since it uses less digits than its factorization.

5645765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129158.

The product of its digits is 126000, while the sum is 38.

The square root of 5645765 is about 2376.0818588592. The cubic root of 5645765 is about 178.0632376413.

The spelling of 5645765 in words is "five million, six hundred forty-five thousand, seven hundred sixty-five".