2720894287 has 2 divisors, whose sum is σ = 2720894288. Its totient is φ = 2720894286.

The previous prime is 2720894279. The next prime is 2720894291. The reversal of 2720894287 is 7824980272.

2720894287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2720894287 - 2³ = 2720894279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2720894287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2720894207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360447143 + 1360447144.

It is an arithmetic number, because the mean of its divisors is an integer number (1360447144).

Almost surely, 2^2720894287 is an apocalyptic number.

2720894287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2720894287 is an equidigital number, since it uses as much as digits as its factorization.

2720894287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 49.

The square root of 2720894287 is about 52162.1921222642. The cubic root of 2720894287 is about 1396.0593755790.

The spelling of 2720894287 in words is "two billion, seven hundred twenty million, eight hundred ninety-four thousand, two hundred eighty-seven".