2720297 has 2 divisors, whose sum is σ = 2720298. Its totient is φ = 2720296.

The previous prime is 2720273. The next prime is 2720299. The reversal of 2720297 is 7920272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1577536 + 1142761 = 1256^2 + 1069^2 .

It is a cyclic number.

It is not a de Polignac number, because 2720297 - 2¹⁰ = 2719273 is a prime.

Together with 2720299, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2720299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360148 + 1360149.

It is an arithmetic number, because the mean of its divisors is an integer number (1360149).

2^2720297 is an apocalyptic number.

It is an amenable number.

2720297 is a deficient number, since it is larger than the sum of its proper divisors (1).

2720297 is an equidigital number, since it uses as much as digits as its factorization.

2720297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 2720297 is about 1649.3322891401. The cubic root of 2720297 is about 139.5957214420.

The spelling of 2720297 in words is "two million, seven hundred twenty thousand, two hundred ninety-seven".