2196709 has 2 divisors, whose sum is σ = 2196710. Its totient is φ = 2196708.

The previous prime is 2196703. The next prime is 2196713. The reversal of 2196709 is 9076912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1216609 + 980100 = 1103^2 + 990^2 .

It is a cyclic number.

It is not a de Polignac number, because 2196709 - 2⁹ = 2196197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2196703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098354 + 1098355.

It is an arithmetic number, because the mean of its divisors is an integer number (1098355).

2^2196709 is an apocalyptic number.

It is an amenable number.

2196709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2196709 is an equidigital number, since it uses as much as digits as its factorization.

2196709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 2196709 is about 1482.1298863460. The cubic root of 2196709 is about 129.9942601016.

The spelling of 2196709 in words is "two million, one hundred ninety-six thousand, seven hundred nine".