26828617 has 2 divisors, whose sum is σ = 26828618. Its totient is φ = 26828616.

The previous prime is 26828569. The next prime is 26828629. The reversal of 26828617 is 71682862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21427641 + 5400976 = 4629^2 + 2324^2 .

It is a cyclic number.

It is not a de Polignac number, because 26828617 - 2¹⁵ = 26795849 is a prime.

It is a super-3 number, since 3×26828617³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26828617.

It is not a weakly prime, because it can be changed into another prime (26828647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13414308 + 13414309.

It is an arithmetic number, because the mean of its divisors is an integer number (13414309).

Almost surely, 2^26828617 is an apocalyptic number.

It is an amenable number.

26828617 is a deficient number, since it is larger than the sum of its proper divisors (1).

26828617 is an equidigital number, since it uses as much as digits as its factorization.

26828617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 40.

The square root of 26828617 is about 5179.6348326885. The cubic root of 26828617 is about 299.3639003589.

The spelling of 26828617 in words is "twenty-six million, eight hundred twenty-eight thousand, six hundred seventeen".