2773656765 has 96 divisors (see below), whose sum is σ = 5656210560. Its totient is φ = 1242777600.

The previous prime is 2773656761. The next prime is 2773656793. The reversal of 2773656765 is 5676563772.

2773656765 is a `hidden beast` number, since 2 + 7 + 73 + 6 + 567 + 6 + 5 = 666.

2773656765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2773656765 - 2² = 2773656761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2773656761) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 382009 + ... + 389201.

It is an arithmetic number, because the mean of its divisors is an integer number (58918860).

Almost surely, 2^2773656765 is an apocalyptic number.

It is an amenable number.

2773656765 is an abundant number, since it is smaller than the sum of its proper divisors (2882553795).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2773656765 is a wasteful number, since it uses less digits than its factorization.

2773656765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7275 (or 7272 counting only the distinct ones).

The product of its digits is 11113200, while the sum is 54.

The square root of 2773656765 is about 52665.5177986508. The cubic root of 2773656765 is about 1405.0256054232.

The spelling of 2773656765 in words is "two billion, seven hundred seventy-three million, six hundred fifty-six thousand, seven hundred sixty-five".