2772710645 has 4 divisors (see below), whose sum is σ = 3327252780. Its totient is φ = 2218168512.

The previous prime is 2772710639. The next prime is 2772710657. The reversal of 2772710645 is 5460172772.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1744482289 + 1028228356 = 41767^2 + 32066^2 .

It is a cyclic number.

It is not a de Polignac number, because 2772710645 - 2¹⁸ = 2772448501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277271060 + ... + 277271069.

It is an arithmetic number, because the mean of its divisors is an integer number (831813195).

Almost surely, 2^2772710645 is an apocalyptic number.

It is an amenable number.

2772710645 is a deficient number, since it is larger than the sum of its proper divisors (554542135).

2772710645 is an equidigital number, since it uses as much as digits as its factorization.

2772710645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554542134.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 2772710645 is about 52656.5346846904. The cubic root of 2772710645 is about 1404.8658315079.

The spelling of 2772710645 in words is "two billion, seven hundred seventy-two million, seven hundred ten thousand, six hundred forty-five".