26716381 has 2 divisors, whose sum is σ = 26716382. Its totient is φ = 26716380.

The previous prime is 26716357. The next prime is 26716423. The reversal of 26716381 is 18361762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22410756 + 4305625 = 4734^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 26716381 - 2¹⁹ = 26192093 is a prime.

It is a super-2 number, since 2×26716381² = 1427530027474322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26716301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13358190 + 13358191.

It is an arithmetic number, because the mean of its divisors is an integer number (13358191).

Almost surely, 2^26716381 is an apocalyptic number.

It is an amenable number.

26716381 is a deficient number, since it is larger than the sum of its proper divisors (1).

26716381 is an equidigital number, since it uses as much as digits as its factorization.

26716381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 26716381 is about 5168.7891231893. The cubic root of 26716381 is about 298.9458595574.

The spelling of 26716381 in words is "twenty-six million, seven hundred sixteen thousand, three hundred eighty-one".