26866811 has 2 divisors, whose sum is σ = 26866812. Its totient is φ = 26866810.

The previous prime is 26866781. The next prime is 26866823. The reversal of 26866811 is 11866862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26866811 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (26866831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13433405 + 13433406.

It is an arithmetic number, because the mean of its divisors is an integer number (13433406).

Almost surely, 2^26866811 is an apocalyptic number.

26866811 is a deficient number, since it is larger than the sum of its proper divisors (1).

26866811 is an equidigital number, since it uses as much as digits as its factorization.

26866811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The square root of 26866811 is about 5183.3204608629. The cubic root of 26866811 is about 299.5058940519.

The spelling of 26866811 in words is "twenty-six million, eight hundred sixty-six thousand, eight hundred eleven".