27220687 has 8 divisors (see below), whose sum is σ = 29378160. Its totient is φ = 25072320.

The previous prime is 27220663. The next prime is 27220703. The reversal of 27220687 is 78602272.

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-27220687 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 (27220607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4764 + ... + 8782.

It is an arithmetic number, because the mean of its divisors is an integer number (3672270).

Almost surely, 2^27220687 is an apocalyptic number.

27220687 is a deficient number, since it is larger than the sum of its proper divisors (2157473).

27220687 is a wasteful number, since it uses less digits than its factorization.

27220687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4553.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 27220687 is about 5217.3448228002. The cubic root of 27220687 is about 300.8151423961.

The spelling of 27220687 in words is "twenty-seven million, two hundred twenty thousand, six hundred eighty-seven".