27770117 has 2 divisors, whose sum is σ = 27770118. Its totient is φ = 27770116.

The previous prime is 27770111. The next prime is 27770137. The reversal of 27770117 is 71107772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16654561 + 11115556 = 4081^2 + 3334^2 .

It is a cyclic number.

It is not a de Polignac number, because 27770117 - 2⁴ = 27770101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27770111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13885058 + 13885059.

It is an arithmetic number, because the mean of its divisors is an integer number (13885059).

Almost surely, 2^27770117 is an apocalyptic number.

It is an amenable number.

27770117 is a deficient number, since it is larger than the sum of its proper divisors (1).

27770117 is an equidigital number, since it uses as much as digits as its factorization.

27770117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4802, while the sum is 32.

The square root of 27770117 is about 5269.7359516393. The cubic root of 27770117 is about 302.8255884648.

Adding to 27770117 its reverse (71107772), we get a palindrome (98877889).

The spelling of 27770117 in words is "twenty-seven million, seven hundred seventy thousand, one hundred seventeen".