2771235648 has 84 divisors (see below), whose sum is σ = 8055242208. Its totient is φ = 910721280.

The previous prime is 2771235613. The next prime is 2771235683. The reversal of 2771235648 is 8465321772.

2771235648 is a `hidden beast` number, since 2 + 77 + 12 + 3 + 564 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (2771235613) and next prime (2771235683).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7015 + ... + 74777.

Almost surely, 2^2771235648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2771235648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4027621104).

2771235648 is an abundant number, since it is smaller than the sum of its proper divisors (5284006560).

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

2771235648 is a wasteful number, since it uses less digits than its factorization.

2771235648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67852 (or 67839 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 2771235648 is about 52642.5269910174. The cubic root of 2771235648 is about 1404.6166721467.

The spelling of 2771235648 in words is "two billion, seven hundred seventy-one million, two hundred thirty-five thousand, six hundred forty-eight".