26897699 has 2 divisors, whose sum is σ = 26897700. Its totient is φ = 26897698.

The previous prime is 26897617. The next prime is 26897713. The reversal of 26897699 is 99679862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26897699 is a prime.

It is a super-2 number, since 2×26897699² = 1446972422989202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26897609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13448849 + 13448850.

It is an arithmetic number, because the mean of its divisors is an integer number (13448850).

Almost surely, 2^26897699 is an apocalyptic number.

26897699 is a deficient number, since it is larger than the sum of its proper divisors (1).

26897699 is an equidigital number, since it uses as much as digits as its factorization.

26897699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 56.

The square root of 26897699 is about 5186.2991622158. The cubic root of 26897699 is about 299.6206278656.

The spelling of 26897699 in words is "twenty-six million, eight hundred ninety-seven thousand, six hundred ninety-nine".