2776797660 has 384 divisors, whose sum is σ = 9957427200. Its totient is φ = 574414848.

The previous prime is 2776797637. The next prime is 2776797707. The reversal of 2776797660 is 667976772.

It is a self number, because there is not a number n which added to its sum of digits gives 2776797660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 25951327 + ... + 25951433.

It is an arithmetic number, because the mean of its divisors is an integer number (25930800).

Almost surely, 2^2776797660 is an apocalyptic number.

2776797660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2776797660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4978713600).

2776797660 is an abundant number, since it is smaller than the sum of its proper divisors (7180629540).

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

2776797660 is a wasteful number, since it uses less digits than its factorization.

2776797660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 9335088, while the sum is 57.

The square root of 2776797660 is about 52695.3286354682. The cubic root of 2776797660 is about 1405.5557567171. Note that the first 3 decimals are identical.

The spelling of 2776797660 in words is "two billion, seven hundred seventy-six million, seven hundred ninety-seven thousand, six hundred sixty".