27220685 has 8 divisors (see below), whose sum is σ = 32854680. Its totient is φ = 21649984.

The previous prime is 27220663. The next prime is 27220703. The reversal of 27220685 is 58602272.

It can be written as a sum of positive squares in 4 ways, for example, as 7409284 + 19811401 = 2722^2 + 4451^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 27220685 - 2¹² = 27216589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14870 + ... + 16599.

It is an arithmetic number, because the mean of its divisors is an integer number (4106835).

Almost surely, 2^27220685 is an apocalyptic number.

It is an amenable number.

27220685 is a deficient number, since it is larger than the sum of its proper divisors (5633995).

27220685 is a wasteful number, since it uses less digits than its factorization.

27220685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31647.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 27220685 is about 5217.3446311318. The cubic root of 27220685 is about 300.8151350288.

The spelling of 27220685 in words is "twenty-seven million, two hundred twenty thousand, six hundred eighty-five".