26820377 has 2 divisors, whose sum is σ = 26820378. Its totient is φ = 26820376.

The previous prime is 26820361. The next prime is 26820379. The reversal of 26820377 is 77302862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15335056 + 11485321 = 3916^2 + 3389^2 .

It is a cyclic number.

It is not a de Polignac number, because 26820377 - 2⁴ = 26820361 is a prime.

Together with 26820379, 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 (26820379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13410188 + 13410189.

It is an arithmetic number, because the mean of its divisors is an integer number (13410189).

Almost surely, 2^26820377 is an apocalyptic number.

It is an amenable number.

26820377 is a deficient number, since it is larger than the sum of its proper divisors (1).

26820377 is an equidigital number, since it uses as much as digits as its factorization.

26820377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 26820377 is about 5178.8393487344. The cubic root of 26820377 is about 299.3332488705. Note that the first 3 decimals are identical.

The spelling of 26820377 in words is "twenty-six million, eight hundred twenty thousand, three hundred seventy-seven".