27768361 has 8 divisors (see below), whose sum is σ = 29448360. Its totient is φ = 26093568.

The previous prime is 27768353. The next prime is 27768371. The reversal of 27768361 is 16386772.

It can be written as a sum of positive squares in 4 ways, for example, as 2073600 + 25694761 = 1440^2 + 5069^2 .

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 27768361 - 2³ = 27768353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27768371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17905 + ... + 19393.

It is an arithmetic number, because the mean of its divisors is an integer number (3681045).

Almost surely, 2^27768361 is an apocalyptic number.

It is an amenable number.

27768361 is a deficient number, since it is larger than the sum of its proper divisors (1679999).

27768361 is a wasteful number, since it uses less digits than its factorization.

27768361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603.

The product of its digits is 84672, while the sum is 40.

The square root of 27768361 is about 5269.5693372419. The cubic root of 27768361 is about 302.8192054291.

The spelling of 27768361 in words is "twenty-seven million, seven hundred sixty-eight thousand, three hundred sixty-one".