2720749779 has 12 divisors (see below), whose sum is σ = 4287242232. Its totient is φ = 1648939200.

The previous prime is 2720749769. The next prime is 2720749789. The reversal of 2720749779 is 9779470272.

It is an interprime number because it is at equal distance from previous prime (2720749769) and next prime (2720749789).

It is not a de Polignac number, because 2720749779 - 2¹² = 2720745683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2720749769) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13741062 + ... + 13741259.

It is an arithmetic number, because the mean of its divisors is an integer number (357270186).

Almost surely, 2^2720749779 is an apocalyptic number.

2720749779 is a deficient number, since it is larger than the sum of its proper divisors (1566492453).

2720749779 is a wasteful number, since it uses less digits than its factorization.

2720749779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27482338 (or 27482335 counting only the distinct ones).

The product of its (nonzero) digits is 3111696, while the sum is 54.

The square root of 2720749779 is about 52160.8069243565. The cubic root of 2720749779 is about 1396.0346600139.

The spelling of 2720749779 in words is "two billion, seven hundred twenty million, seven hundred forty-nine thousand, seven hundred seventy-nine".