26198507 has 2 divisors, whose sum is σ = 26198508. Its totient is φ = 26198506.

The previous prime is 26198461. The next prime is 26198509. The reversal of 26198507 is 70589162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26198507 - 2¹⁶ = 26132971 is a prime.

Together with 26198509, 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 (26198509) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13099253 + 13099254.

It is an arithmetic number, because the mean of its divisors is an integer number (13099254).

Almost surely, 2^26198507 is an apocalyptic number.

26198507 is a deficient number, since it is larger than the sum of its proper divisors (1).

26198507 is an equidigital number, since it uses as much as digits as its factorization.

26198507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 26198507 is about 5118.4477139070. The cubic root of 26198507 is about 297.0016400352.

The spelling of 26198507 in words is "twenty-six million, one hundred ninety-eight thousand, five hundred seven".