2797813 has 2 divisors, whose sum is σ = 2797814. Its totient is φ = 2797812.

The previous prime is 2797793. The next prime is 2797819. The reversal of 2797813 is 3187972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1456849 + 1340964 = 1207^2 + 1158^2 .

It is a cyclic number.

It is not a de Polignac number, because 2797813 - 2¹³ = 2789621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2797819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1398906 + 1398907.

It is an arithmetic number, because the mean of its divisors is an integer number (1398907).

2^2797813 is an apocalyptic number.

It is an amenable number.

2797813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2797813 is an equidigital number, since it uses as much as digits as its factorization.

2797813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 2797813 is about 1672.6664341703. Note that the first 3 decimals coincide. The cubic root of 2797813 is about 140.9092687918.

The spelling of 2797813 in words is "two million, seven hundred ninety-seven thousand, eight hundred thirteen".