2320709 has 2 divisors, whose sum is σ = 2320710. Its totient is φ = 2320708.

The previous prime is 2320699. The next prime is 2320729. The reversal of 2320709 is 9070232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2316484 + 4225 = 1522^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 2320709 - 2²⁰ = 1272133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2320729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160354 + 1160355.

It is an arithmetic number, because the mean of its divisors is an integer number (1160355).

2^2320709 is an apocalyptic number.

It is an amenable number.

2320709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2320709 is an equidigital number, since it uses as much as digits as its factorization.

2320709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 2320709 is about 1523.3873440462. The cubic root of 2320709 is about 132.3956030644.

The spelling of 2320709 in words is "two million, three hundred twenty thousand, seven hundred nine".