2779654648 has 32 divisors (see below), whose sum is σ = 5273246160. Its totient is φ = 1373552640.

The previous prime is 2779654643. The next prime is 2779654681. The reversal of 2779654648 is 8464569772.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2779654592 and 2779654601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2779654643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230136 + ... + 241912.

Almost surely, 2^2779654648 is an apocalyptic number.

It is an amenable number.

2779654648 is a deficient number, since it is larger than the sum of its proper divisors (2493591512).

2779654648 is a wasteful number, since it uses less digits than its factorization.

2779654648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12127 (or 12123 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 58.

The square root of 2779654648 is about 52722.4302171286. The cubic root of 2779654648 is about 1406.0376402871.

The spelling of 2779654648 in words is "two billion, seven hundred seventy-nine million, six hundred fifty-four thousand, six hundred forty-eight".