2772686864 has 10 divisors (see below), whose sum is σ = 5372080830. Its totient is φ = 1386343424.

The previous prime is 2772686857. The next prime is 2772686879. The reversal of 2772686864 is 4686862772.

It can be written as a sum of positive squares in only one way, i.e., 2660496400 + 112190464 = 51580^2 + 10592^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86646449 + ... + 86646480.

It is an arithmetic number, because the mean of its divisors is an integer number (537208083).

Almost surely, 2^2772686864 is an apocalyptic number.

It is an amenable number.

2772686864 is a deficient number, since it is larger than the sum of its proper divisors (2599393966).

2772686864 is a wasteful number, since it uses less digits than its factorization.

2772686864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173292937 (or 173292931 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 56.

The square root of 2772686864 is about 52656.3088717772. The cubic root of 2772686864 is about 1404.8618150761.

The spelling of 2772686864 in words is "two billion, seven hundred seventy-two million, six hundred eighty-six thousand, eight hundred sixty-four".