26678647 has 2 divisors, whose sum is σ = 26678648. Its totient is φ = 26678646.

The previous prime is 26678633. The next prime is 26678651. The reversal of 26678647 is 74687662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26678647 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 26678597 and 26678606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26678677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13339323 + 13339324.

It is an arithmetic number, because the mean of its divisors is an integer number (13339324).

Almost surely, 2^26678647 is an apocalyptic number.

26678647 is a deficient number, since it is larger than the sum of its proper divisors (1).

26678647 is an equidigital number, since it uses as much as digits as its factorization.

26678647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 46.

The square root of 26678647 is about 5165.1376554744. The cubic root of 26678647 is about 298.8050503409.

The spelling of 26678647 in words is "twenty-six million, six hundred seventy-eight thousand, six hundred forty-seven".