10720709 has 2 divisors, whose sum is σ = 10720710. Its totient is φ = 10720708.

The previous prime is 10720679. The next prime is 10720711. The reversal of 10720709 is 90702701.

10720709 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., 9333025 + 1387684 = 3055^2 + 1178^2 .

It is a cyclic number.

It is not a de Polignac number, because 10720709 - 2⁸ = 10720453 is a prime.

It is a super-2 number, since 2×10720709² = 229867202925362, which contains 22 as substring.

Together with 10720711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10720799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5360354 + 5360355.

It is an arithmetic number, because the mean of its divisors is an integer number (5360355).

Almost surely, 2^10720709 is an apocalyptic number.

It is an amenable number.

10720709 is a deficient number, since it is larger than the sum of its proper divisors (1).

10720709 is an equidigital number, since it uses as much as digits as its factorization.

10720709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 10720709 is about 3274.2493796289. The cubic root of 10720709 is about 220.4996152145.

The spelling of 10720709 in words is "ten million, seven hundred twenty thousand, seven hundred nine".