2720782647 has 18 divisors (see below), whose sum is σ = 4319775096. Its totient is φ = 1648958520.

The previous prime is 2720782553. The next prime is 2720782651. The reversal of 2720782647 is 7462870272.

It is not a de Polignac number, because 2720782647 - 2¹⁴ = 2720766263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720782657) 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 17 ways as a sum of consecutive naturals, for example, 1248123 + ... + 1250300.

Almost surely, 2^2720782647 is an apocalyptic number.

2720782647 is a deficient number, since it is larger than the sum of its proper divisors (1598992449).

2720782647 is a wasteful number, since it uses less digits than its factorization.

2720782647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498451 (or 2498437 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The square root of 2720782647 is about 52161.1219875493. The cubic root of 2720782647 is about 1396.0402815871.

The spelling of 2720782647 in words is "two billion, seven hundred twenty million, seven hundred eighty-two thousand, six hundred forty-seven".