26687923 has 2 divisors, whose sum is σ = 26687924. Its totient is φ = 26687922.

The previous prime is 26687879. The next prime is 26687929. The reversal of 26687923 is 32978662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26687923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26687923.

It is not a weakly prime, because it can be changed into another prime (26687929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13343961 + 13343962.

It is an arithmetic number, because the mean of its divisors is an integer number (13343962).

Almost surely, 2^26687923 is an apocalyptic number.

26687923 is a deficient number, since it is larger than the sum of its proper divisors (1).

26687923 is an equidigital number, since it uses as much as digits as its factorization.

26687923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 26687923 is about 5166.0355205902. The cubic root of 26687923 is about 298.8396772153.

The spelling of 26687923 in words is "twenty-six million, six hundred eighty-seven thousand, nine hundred twenty-three".