2774899656 has 96 divisors (see below), whose sum is σ = 7733639160. Its totient is φ = 898200576.

The previous prime is 2774899651. The next prime is 2774899657. The reversal of 2774899656 is 6569984772.

2774899656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2731734756 + 43164900 = 52266^2 + 6570^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2774899593 and 2774899602.

It is not an unprimeable number, because it can be changed into a prime (2774899651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2538246 + ... + 2539338.

Almost surely, 2^2774899656 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 2774899656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3866819580).

2774899656 is an abundant number, since it is smaller than the sum of its proper divisors (4958739504).

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

2774899656 is a wasteful number, since it uses less digits than its factorization.

2774899656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095 (or 2088 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The square root of 2774899656 is about 52677.3163325544. The cubic root of 2774899656 is about 1405.2354406757.

The spelling of 2774899656 in words is "two billion, seven hundred seventy-four million, eight hundred ninety-nine thousand, six hundred fifty-six".