2440765 has 4 divisors (see below), whose sum is σ = 2928924. Its totient is φ = 1952608.

The previous prime is 2440751. The next prime is 2440787. The reversal of 2440765 is 5670442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5670442 = 2 ⋅2835221.

It can be written as a sum of positive squares in 2 ways, for example, as 1267876 + 1172889 = 1126^2 + 1083^2 .

It is a cyclic number.

It is not a de Polignac number, because 2440765 - 2⁵ = 2440733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 244072 + ... + 244081.

It is an arithmetic number, because the mean of its divisors is an integer number (732231).

2^2440765 is an apocalyptic number.

It is an amenable number.

2440765 is a deficient number, since it is larger than the sum of its proper divisors (488159).

2440765 is an equidigital number, since it uses as much as digits as its factorization.

2440765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488158.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 2440765 is about 1562.2947865240. The cubic root of 2440765 is about 134.6403780281.

The spelling of 2440765 in words is "two million, four hundred forty thousand, seven hundred sixty-five".