2772249686 has 16 divisors (see below), whose sum is σ = 4266758160. Its totient is φ = 1350107520.

The previous prime is 2772249677. The next prime is 2772249703. The reversal of 2772249686 is 6869422772.

2772249686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23450 + ... + 78066.

It is an arithmetic number, because the mean of its divisors is an integer number (266672385).

Almost surely, 2^2772249686 is an apocalyptic number.

2772249686 is a deficient number, since it is larger than the sum of its proper divisors (1494508474).

2772249686 is a wasteful number, since it uses less digits than its factorization.

2772249686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55279.

The product of its digits is 4064256, while the sum is 53.

The square root of 2772249686 is about 52652.1574676670. The cubic root of 2772249686 is about 1404.7879749118.

The spelling of 2772249686 in words is "two billion, seven hundred seventy-two million, two hundred forty-nine thousand, six hundred eighty-six".