27266561 has 8 divisors (see below), whose sum is σ = 31438464. Its totient is φ = 23163840.

The previous prime is 27266549. The next prime is 27266563. The reversal of 27266561 is 16566272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-27266561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27266563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16445 + ... + 18026.

It is an arithmetic number, because the mean of its divisors is an integer number (3929808).

Almost surely, 2^27266561 is an apocalyptic number.

It is an amenable number.

27266561 is a deficient number, since it is larger than the sum of its proper divisors (4171903).

27266561 is a wasteful number, since it uses less digits than its factorization.

27266561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34591.

The product of its digits is 30240, while the sum is 35.

The square root of 27266561 is about 5221.7392696304. The cubic root of 27266561 is about 300.9840317059.

The spelling of 27266561 in words is "twenty-seven million, two hundred sixty-six thousand, five hundred sixty-one".