26698513 has 2 divisors, whose sum is σ = 26698514. Its totient is φ = 26698512.

The previous prime is 26698501. The next prime is 26698543. The reversal of 26698513 is 31589662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25979409 + 719104 = 5097^2 + 848^2 .

It is a cyclic number.

It is not a de Polignac number, because 26698513 - 2⁵ = 26698481 is a prime.

It is a super-2 number, since 2×26698513² = 1425621192822338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26698543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13349256 + 13349257.

It is an arithmetic number, because the mean of its divisors is an integer number (13349257).

Almost surely, 2^26698513 is an apocalyptic number.

It is an amenable number.

26698513 is a deficient number, since it is larger than the sum of its proper divisors (1).

26698513 is an equidigital number, since it uses as much as digits as its factorization.

26698513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 26698513 is about 5167.0603828483. The cubic root of 26698513 is about 298.8791993827.

The spelling of 26698513 in words is "twenty-six million, six hundred ninety-eight thousand, five hundred thirteen".