27663668 has 12 divisors (see below), whose sum is σ = 49325220. Its totient is φ = 13570752.

The previous prime is 27663661. The next prime is 27663689. The reversal of 27663668 is 86636672.

It can be written as a sum of positive squares in 2 ways, for example, as 16826404 + 10837264 = 4102^2 + 3292^2 .

It is a super-3 number, since 3×27663668³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27663661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65033 + ... + 65456.

It is an arithmetic number, because the mean of its divisors is an integer number (4110435).

Almost surely, 2^27663668 is an apocalyptic number.

It is an amenable number.

27663668 is a deficient number, since it is larger than the sum of its proper divisors (21661552).

27663668 is a wasteful number, since it uses less digits than its factorization.

27663668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130546 (or 130544 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The square root of 27663668 is about 5259.6262224611. The cubic root of 27663668 is about 302.4381605258.

The spelling of 27663668 in words is "twenty-seven million, six hundred sixty-three thousand, six hundred sixty-eight".