2180797 has 2 divisors, whose sum is σ = 2180798. Its totient is φ = 2180796.

The previous prime is 2180747. The next prime is 2180803. The reversal of 2180797 is 7970812.

2180797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1425636 + 755161 = 1194^2 + 869^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2180797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2180747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090398 + 1090399.

It is an arithmetic number, because the mean of its divisors is an integer number (1090399).

2^2180797 is an apocalyptic number.

It is an amenable number.

2180797 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180797 is an equidigital number, since it uses as much as digits as its factorization.

2180797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 2180797 is about 1476.7521796158. The cubic root of 2180797 is about 129.6796253118.

It can be divided in two parts, 21807 and 97, that added together give a square (21904 = 148²).

The spelling of 2180797 in words is "two million, one hundred eighty thousand, seven hundred ninety-seven".