2720705191 has 2 divisors, whose sum is σ = 2720705192. Its totient is φ = 2720705190.

The previous prime is 2720705149. The next prime is 2720705231. The reversal of 2720705191 is 1915070272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2720705191 - 2⁷ = 2720705063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2720765191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360352595 + 1360352596.

It is an arithmetic number, because the mean of its divisors is an integer number (1360352596).

Almost surely, 2^2720705191 is an apocalyptic number.

2720705191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2720705191 is an equidigital number, since it uses as much as digits as its factorization.

2720705191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 2720705191 is about 52160.3795135733. The cubic root of 2720705191 is about 1396.0270338399.

The spelling of 2720705191 in words is "two billion, seven hundred twenty million, seven hundred five thousand, one hundred ninety-one".