26826649 has 2 divisors, whose sum is σ = 26826650. Its totient is φ = 26826648.

The previous prime is 26826637. The next prime is 26826661. The reversal of 26826649 is 94662862.

It is a balanced prime because it is at equal distance from previous prime (26826637) and next prime (26826661).

It can be written as a sum of positive squares in only one way, i.e., 20611600 + 6215049 = 4540^2 + 2493^2 .

It is a cyclic number.

It is not a de Polignac number, because 26826649 - 2¹³ = 26818457 is a prime.

It is not a weakly prime, because it can be changed into another prime (26826949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13413324 + 13413325.

It is an arithmetic number, because the mean of its divisors is an integer number (13413325).

Almost surely, 2^26826649 is an apocalyptic number.

It is an amenable number.

26826649 is a deficient number, since it is larger than the sum of its proper divisors (1).

26826649 is an equidigital number, since it uses as much as digits as its factorization.

26826649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 26826649 is about 5179.4448544221. Note that the first 3 decimals coincide. The cubic root of 26826649 is about 299.3565802827.

The spelling of 26826649 in words is "twenty-six million, eight hundred twenty-six thousand, six hundred forty-nine".