2790745 has 4 divisors (see below), whose sum is σ = 3348900. Its totient is φ = 2232592.

The previous prime is 2790721. The next prime is 2790769. The reversal of 2790745 is 5470972.

2790745 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.

It is an interprime number because it is at equal distance from previous prime (2790721) and next prime (2790769).

It can be written as a sum of positive squares in 2 ways, for example, as 1121481 + 1669264 = 1059^2 + 1292^2 .

It is a cyclic number.

It is not a de Polignac number, because 2790745 - 2⁹ = 2790233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2790745.

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, 279070 + ... + 279079.

It is an arithmetic number, because the mean of its divisors is an integer number (837225).

2^2790745 is an apocalyptic number.

It is an amenable number.

2790745 is a deficient number, since it is larger than the sum of its proper divisors (558155).

2790745 is an equidigital number, since it uses as much as digits as its factorization.

2790745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558154.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 2790745 is about 1670.5523038804. The cubic root of 2790745 is about 140.7905109663.

The spelling of 2790745 in words is "two million, seven hundred ninety thousand, seven hundred forty-five".