26646049 has 4 divisors (see below), whose sum is σ = 26712900. Its totient is φ = 26579200.

The previous prime is 26646013. The next prime is 26646073. The reversal of 26646049 is 94064662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26214400 + 431649 = 5120^2 + 657^2 .

It is a cyclic number.

It is not a de Polignac number, because 26646049 - 2⁹ = 26645537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26645999 and 26646017.

It is not an unprimeable number, because it can be changed into a prime (26646149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32824 + ... + 33625.

It is an arithmetic number, because the mean of its divisors is an integer number (6678225).

Almost surely, 2^26646049 is an apocalyptic number.

It is an amenable number.

26646049 is a deficient number, since it is larger than the sum of its proper divisors (66851).

26646049 is an equidigital number, since it uses as much as digits as its factorization.

26646049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66850.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 26646049 is about 5161.9811119375. The cubic root of 26646049 is about 298.6832998272.

The spelling of 26646049 in words is "twenty-six million, six hundred forty-six thousand, forty-nine".