2720538668 has 6 divisors (see below), whose sum is σ = 4760942676. Its totient is φ = 1360269332.

The previous prime is 2720538649. The next prime is 2720538683. The reversal of 2720538668 is 8668350272.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340067330 + ... + 340067337.

It is an arithmetic number, because the mean of its divisors is an integer number (793490446).

Almost surely, 2^2720538668 is an apocalyptic number.

It is an amenable number.

2720538668 is a deficient number, since it is larger than the sum of its proper divisors (2040404008).

2720538668 is a wasteful number, since it uses less digits than its factorization.

2720538668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680134671 (or 680134669 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 2720538668 is about 52158.7832296728. The cubic root of 2720538668 is about 1395.9985515977.

The spelling of 2720538668 in words is "two billion, seven hundred twenty million, five hundred thirty-eight thousand, six hundred sixty-eight".