2720899 has 2 divisors, whose sum is σ = 2720900. Its totient is φ = 2720898.

The previous prime is 2720897. The next prime is 2720917. The reversal of 2720899 is 9980272.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2720899 - 2¹ = 2720897 is a prime.

Together with 2720897, it forms a pair of twin primes.

2720899 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2720891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360449 + 1360450.

It is an arithmetic number, because the mean of its divisors is an integer number (1360450).

2^2720899 is an apocalyptic number.

2720899 is a deficient number, since it is larger than the sum of its proper divisors (1).

2720899 is an equidigital number, since it uses as much as digits as its factorization.

2720899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2720899 is about 1649.5147771390. The cubic root of 2720899 is about 139.6060181640.

The spelling of 2720899 in words is "two million, seven hundred twenty thousand, eight hundred ninety-nine".