2650779648 has 208 divisors, whose sum is σ = 8571062400. Its totient is φ = 802897920.

The previous prime is 2650779619. The next prime is 2650779673. The reversal of 2650779648 is 8469770562.

2650779648 is a `hidden beast` number, since 2 + 6 + 507 + 7 + 96 + 48 = 666.

2650779648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 2650779594 and 2650779603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1215423 + ... + 1217601.

Almost surely, 2^2650779648 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 2650779648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4285531200).

2650779648 is an abundant number, since it is smaller than the sum of its proper divisors (5920282752).

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

2650779648 is a wasteful number, since it uses less digits than its factorization.

2650779648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223 (or 2195 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The square root of 2650779648 is about 51485.7227588387. The cubic root of 2650779648 is about 1383.9632008214.

The spelling of 2650779648 in words is "two billion, six hundred fifty million, seven hundred seventy-nine thousand, six hundred forty-eight".