2785145723 has 4 divisors (see below), whose sum is σ = 2931732360. Its totient is φ = 2638559088.

The previous prime is 2785145719. The next prime is 2785145729. The reversal of 2785145723 is 3275415872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2785145723 - 2² = 2785145719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2785145729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73293290 + ... + 73293327.

It is an arithmetic number, because the mean of its divisors is an integer number (732933090).

Almost surely, 2^2785145723 is an apocalyptic number.

2785145723 is a deficient number, since it is larger than the sum of its proper divisors (146586637).

2785145723 is a wasteful number, since it uses less digits than its factorization.

2785145723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146586636.

The product of its digits is 470400, while the sum is 44.

The square root of 2785145723 is about 52774.4798458497. The cubic root of 2785145723 is about 1406.9628846975.

The spelling of 2785145723 in words is "two billion, seven hundred eighty-five million, one hundred forty-five thousand, seven hundred twenty-three".