26720677 has 2 divisors, whose sum is σ = 26720678. Its totient is φ = 26720676.

The previous prime is 26720671. The next prime is 26720689. The reversal of 26720677 is 77602762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26718561 + 2116 = 5169^2 + 46^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26720677 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 (26720671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13360338 + 13360339.

It is an arithmetic number, because the mean of its divisors is an integer number (13360339).

Almost surely, 2^26720677 is an apocalyptic number.

It is an amenable number.

26720677 is a deficient number, since it is larger than the sum of its proper divisors (1).

26720677 is an equidigital number, since it uses as much as digits as its factorization.

26720677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 26720677 is about 5169.2046777043. The cubic root of 26720677 is about 298.9618822189.

The spelling of 26720677 in words is "twenty-six million, seven hundred twenty thousand, six hundred seventy-seven".