26682221 has 2 divisors, whose sum is σ = 26682222. Its totient is φ = 26682220.

The previous prime is 26682203. The next prime is 26682247. The reversal of 26682221 is 12228662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17598025 + 9084196 = 4195^2 + 3014^2 .

It is a cyclic number.

It is not a de Polignac number, because 26682221 - 2²² = 22487917 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 (26682121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13341110 + 13341111.

It is an arithmetic number, because the mean of its divisors is an integer number (13341111).

Almost surely, 2^26682221 is an apocalyptic number.

It is an amenable number.

26682221 is a deficient number, since it is larger than the sum of its proper divisors (1).

26682221 is an equidigital number, since it uses as much as digits as its factorization.

26682221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 26682221 is about 5165.4836172424. The cubic root of 26682221 is about 298.8183928662.

The spelling of 26682221 in words is "twenty-six million, six hundred eighty-two thousand, two hundred twenty-one".