27068591 has 4 divisors (see below), whose sum is σ = 29529384. Its totient is φ = 24607800.

The previous prime is 27068581. The next prime is 27068599. The reversal of 27068591 is 19586072.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27068591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27068599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1230380 + ... + 1230401.

It is an arithmetic number, because the mean of its divisors is an integer number (7382346).

Almost surely, 2^27068591 is an apocalyptic number.

27068591 is a deficient number, since it is larger than the sum of its proper divisors (2460793).

27068591 is a wasteful number, since it uses less digits than its factorization.

27068591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460792.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 27068591 is about 5202.7484082934. The cubic root of 27068591 is about 300.2538259215.

The spelling of 27068591 in words is "twenty-seven million, sixty-eight thousand, five hundred ninety-one".