26720713 has 2 divisors, whose sum is σ = 26720714. Its totient is φ = 26720712.

The previous prime is 26720699. The next prime is 26720717. The reversal of 26720713 is 31702762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25775929 + 944784 = 5077^2 + 972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26720713 is a prime.

It is not a weakly prime, because it can be changed into another prime (26720717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13360356 + 13360357.

It is an arithmetic number, because the mean of its divisors is an integer number (13360357).

Almost surely, 2^26720713 is an apocalyptic number.

It is an amenable number.

26720713 is a deficient number, since it is larger than the sum of its proper divisors (1).

26720713 is an equidigital number, since it uses as much as digits as its factorization.

26720713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 26720713 is about 5169.2081598636. The cubic root of 26720713 is about 298.9620164797.

The spelling of 26720713 in words is "twenty-six million, seven hundred twenty thousand, seven hundred thirteen".