26688967 has 2 divisors, whose sum is σ = 26688968. Its totient is φ = 26688966.

The previous prime is 26688917. The next prime is 26688989. The reversal of 26688967 is 76988662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26688967 - 2¹⁵ = 26656199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26688917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13344483 + 13344484.

It is an arithmetic number, because the mean of its divisors is an integer number (13344484).

Almost surely, 2^26688967 is an apocalyptic number.

26688967 is a deficient number, since it is larger than the sum of its proper divisors (1).

26688967 is an equidigital number, since it uses as much as digits as its factorization.

26688967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 52.

The square root of 26688967 is about 5166.1365642035. The cubic root of 26688967 is about 298.8435739161.

The spelling of 26688967 in words is "twenty-six million, six hundred eighty-eight thousand, nine hundred sixty-seven".