26236681 has 2 divisors, whose sum is σ = 26236682. Its totient is φ = 26236680.

The previous prime is 26236631. The next prime is 26236687. The reversal of 26236681 is 18663262.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25857225 + 379456 = 5085^2 + 616^2 .

It is a cyclic number.

It is not a de Polignac number, because 26236681 - 2¹¹ = 26234633 is a prime.

It is a super-2 number, since 2×26236681² = 1376726859791522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26236687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13118340 + 13118341.

It is an arithmetic number, because the mean of its divisors is an integer number (13118341).

Almost surely, 2^26236681 is an apocalyptic number.

It is an amenable number.

26236681 is a deficient number, since it is larger than the sum of its proper divisors (1).

26236681 is an equidigital number, since it uses as much as digits as its factorization.

26236681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 26236681 is about 5122.1754167541. The cubic root of 26236681 is about 297.1458243113.

The spelling of 26236681 in words is "twenty-six million, two hundred thirty-six thousand, six hundred eighty-one".