26790977 has 2 divisors, whose sum is σ = 26790978. Its totient is φ = 26790976.

The previous prime is 26790961. The next prime is 26790979. The reversal of 26790977 is 77909762.

It is a Cunningham number, because it is equal to 5176²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26790976 + 1 = 5176^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 26790977 - 2⁴ = 26790961 is a prime.

It is a super-2 number, since 2×26790977² = 1435512897229058, which contains 22 as substring.

Together with 26790979, 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 (26790979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13395488 + 13395489.

It is an arithmetic number, because the mean of its divisors is an integer number (13395489).

Almost surely, 2^26790977 is an apocalyptic number.

It is an amenable number.

26790977 is a deficient number, since it is larger than the sum of its proper divisors (1).

26790977 is an equidigital number, since it uses as much as digits as its factorization.

26790977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 333396, while the sum is 47.

The square root of 26790977 is about 5176.0000965997. Note that the first 4 decimals coincide. The cubic root of 26790977 is about 299.2238343622.

The spelling of 26790977 in words is "twenty-six million, seven hundred ninety thousand, nine hundred seventy-seven".