2820361 has 2 divisors, whose sum is σ = 2820362. Its totient is φ = 2820360.

The previous prime is 2820359. The next prime is 2820373. The reversal of 2820361 is 1630282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1610361 + 1210000 = 1269^2 + 1100^2 .

It is a cyclic number.

It is not a de Polignac number, because 2820361 - 2¹ = 2820359 is a prime.

Together with 2820359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2820331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410180 + 1410181.

It is an arithmetic number, because the mean of its divisors is an integer number (1410181).

2^2820361 is an apocalyptic number.

It is an amenable number.

2820361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2820361 is an equidigital number, since it uses as much as digits as its factorization.

2820361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2820361 is about 1679.3930451208. The cubic root of 2820361 is about 141.2867928275.

The spelling of 2820361 in words is "two million, eight hundred twenty thousand, three hundred sixty-one".