26764321 has 2 divisors, whose sum is σ = 26764322. Its totient is φ = 26764320.

The previous prime is 26764319. The next prime is 26764327. The reversal of 26764321 is 12346762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18584721 + 8179600 = 4311^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 26764321 - 2¹ = 26764319 is a prime.

Together with 26764319, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26764327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13382160 + 13382161.

It is an arithmetic number, because the mean of its divisors is an integer number (13382161).

Almost surely, 2^26764321 is an apocalyptic number.

It is an amenable number.

26764321 is a deficient number, since it is larger than the sum of its proper divisors (1).

26764321 is an equidigital number, since it uses as much as digits as its factorization.

26764321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 26764321 is about 5173.4244944717. The cubic root of 26764321 is about 299.1245626646.

The spelling of 26764321 in words is "twenty-six million, seven hundred sixty-four thousand, three hundred twenty-one".