2668778662 has 24 divisors (see below), whose sum is σ = 4424830200. Its totient is φ = 1206284640.

The previous prime is 2668778657. The next prime is 2668778687.

2668778662 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 2668778597 and 2668778606.

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, 12514 + ... + 74122.

It is an arithmetic number, because the mean of its divisors is an integer number (184367925).

Almost surely, 2^2668778662 is an apocalyptic number.

2668778662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2668778662 is a deficient number, since it is larger than the sum of its proper divisors (1756051538).

2668778662 is a wasteful number, since it uses less digits than its factorization.

2668778662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61812 (or 61801 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 58.

The square root of 2668778662 is about 51660.2232089642. The cubic root of 2668778662 is about 1387.0885460391.

The spelling of 2668778662 in words is "two billion, six hundred sixty-eight million, seven hundred seventy-eight thousand, six hundred sixty-two".