2772645 has 8 divisors (see below), whose sum is σ = 4436256. Its totient is φ = 1478736.

The previous prime is 2772643. The next prime is 2772647. The reversal of 2772645 is 5462772.

2772645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2772643) and next prime (2772647).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2772645 - 2¹ = 2772643 is a prime.

2772645 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2772643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 92407 + ... + 92436.

It is an arithmetic number, because the mean of its divisors is an integer number (554532).

2^2772645 is an apocalyptic number.

It is an amenable number.

2772645 is a deficient number, since it is larger than the sum of its proper divisors (1663611).

2772645 is a wasteful number, since it uses less digits than its factorization.

2772645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184851.

The product of its digits is 23520, while the sum is 33.

The square root of 2772645 is about 1665.1261213494. The cubic root of 2772645 is about 140.4854744506.

The spelling of 2772645 in words is "two million, seven hundred seventy-two thousand, six hundred forty-five".