27530669 has 2 divisors, whose sum is σ = 27530670. Its totient is φ = 27530668.

The previous prime is 27530663. The next prime is 27530687. The reversal of 27530669 is 96603572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23377225 + 4153444 = 4835^2 + 2038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27530669 is a prime.

It is a super-2 number, since 2×27530669² = 1515875471175122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27530663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13765334 + 13765335.

It is an arithmetic number, because the mean of its divisors is an integer number (13765335).

Almost surely, 2^27530669 is an apocalyptic number.

It is an amenable number.

27530669 is a deficient number, since it is larger than the sum of its proper divisors (1).

27530669 is an equidigital number, since it uses as much as digits as its factorization.

27530669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 27530669 is about 5246.9676004336. The cubic root of 27530669 is about 301.9527030005.

The spelling of 27530669 in words is "twenty-seven million, five hundred thirty thousand, six hundred sixty-nine".