26664193 has 2 divisors, whose sum is σ = 26664194. Its totient is φ = 26664192.

The previous prime is 26664151. The next prime is 26664203. The reversal of 26664193 is 39146662.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23541904 + 3122289 = 4852^2 + 1767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26664193 is a prime.

It is not a weakly prime, because it can be changed into another prime (26664103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13332096 + 13332097.

It is an arithmetic number, because the mean of its divisors is an integer number (13332097).

Almost surely, 2^26664193 is an apocalyptic number.

It is an amenable number.

26664193 is a deficient number, since it is larger than the sum of its proper divisors (1).

26664193 is an equidigital number, since it uses as much as digits as its factorization.

26664193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 37.

The square root of 26664193 is about 5163.7382776434. The cubic root of 26664193 is about 298.7510782335.

It can be divided in two parts, 2666 and 4193, that added together give a cube (6859 = 19³).

The spelling of 26664193 in words is "twenty-six million, six hundred sixty-four thousand, one hundred ninety-three".