26705661 has 4 divisors (see below), whose sum is σ = 35607552. Its totient is φ = 17803772.

The previous prime is 26705633. The next prime is 26705671. The reversal of 26705661 is 16650762.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26705661 - 2⁷ = 26705533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26705671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4450941 + ... + 4450946.

It is an arithmetic number, because the mean of its divisors is an integer number (8901888).

Almost surely, 2^26705661 is an apocalyptic number.

It is an amenable number.

26705661 is a deficient number, since it is larger than the sum of its proper divisors (8901891).

26705661 is an equidigital number, since it uses as much as digits as its factorization.

26705661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8901890.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 26705661 is about 5167.7520257845. The cubic root of 26705661 is about 298.9058700052.

The spelling of 26705661 in words is "twenty-six million, seven hundred five thousand, six hundred sixty-one".