2790765 has 12 divisors (see below), whose sum is σ = 4837404. Its totient is φ = 1488384.

The previous prime is 2790721. The next prime is 2790769. The reversal of 2790765 is 5670972.

It can be written as a sum of positive squares in 2 ways, for example, as 2196324 + 594441 = 1482^2 + 771^2 .

It is not a de Polignac number, because 2790765 - 2⁹ = 2790253 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2790769) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30964 + ... + 31053.

It is an arithmetic number, because the mean of its divisors is an integer number (403117).

2^2790765 is an apocalyptic number.

It is an amenable number.

2790765 is a deficient number, since it is larger than the sum of its proper divisors (2046639).

2790765 is a wasteful number, since it uses less digits than its factorization.

2790765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62028 (or 62025 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 2790765 is about 1670.5582899139. The cubic root of 2790765 is about 140.7908472927.

It can be divided in two parts, 27907 and 65, that added together give a palindrome (27972).

The spelling of 2790765 in words is "two million, seven hundred ninety thousand, seven hundred sixty-five".