26578897 has 2 divisors, whose sum is σ = 26578898. Its totient is φ = 26578896.

The previous prime is 26578883. The next prime is 26578919. The reversal of 26578897 is 79887562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22953681 + 3625216 = 4791^2 + 1904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26578897 is a prime.

It is not a weakly prime, because it can be changed into another prime (26578807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13289448 + 13289449.

It is an arithmetic number, because the mean of its divisors is an integer number (13289449).

Almost surely, 2^26578897 is an apocalyptic number.

It is an amenable number.

26578897 is a deficient number, since it is larger than the sum of its proper divisors (1).

26578897 is an equidigital number, since it uses as much as digits as its factorization.

26578897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 52.

The square root of 26578897 is about 5155.4725292644. The cubic root of 26578897 is about 298.4321800007.

The spelling of 26578897 in words is "twenty-six million, five hundred seventy-eight thousand, eight hundred ninety-seven".