2720863687 has 2 divisors, whose sum is σ = 2720863688. Its totient is φ = 2720863686.

The previous prime is 2720863667. The next prime is 2720863693. The reversal of 2720863687 is 7863680272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2720863687 - 2¹⁵ = 2720830919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2720863687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2720863667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360431843 + 1360431844.

It is an arithmetic number, because the mean of its divisors is an integer number (1360431844).

Almost surely, 2^2720863687 is an apocalyptic number.

2720863687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2720863687 is an equidigital number, since it uses as much as digits as its factorization.

2720863687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The square root of 2720863687 is about 52161.8988055458. The cubic root of 2720863687 is about 1396.0541420574.

The spelling of 2720863687 in words is "two billion, seven hundred twenty million, eight hundred sixty-three thousand, six hundred eighty-seven".