2772871647 has 32 divisors (see below), whose sum is σ = 4789854720. Its totient is φ = 1385631360.

The previous prime is 2772871613. The next prime is 2772871657. The reversal of 2772871647 is 7461782772.

It is not a de Polignac number, because 2772871647 - 2¹⁰ = 2772870623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2772871647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2772871657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262104 + ... + 272477.

It is an arithmetic number, because the mean of its divisors is an integer number (149682960).

Almost surely, 2^2772871647 is an apocalyptic number.

2772871647 is a deficient number, since it is larger than the sum of its proper divisors (2016983073).

2772871647 is a wasteful number, since it uses less digits than its factorization.

2772871647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534623.

The product of its digits is 1843968, while the sum is 51.

The square root of 2772871647 is about 52658.0634566065. The cubic root of 2772871647 is about 1404.8930229294.

The spelling of 2772871647 in words is "two billion, seven hundred seventy-two million, eight hundred seventy-one thousand, six hundred forty-seven".