27620081 has 2 divisors, whose sum is σ = 27620082. Its totient is φ = 27620080.

The previous prime is 27620051. The next prime is 27620107. The reversal of 27620081 is 18002672.

It is an a-pointer prime, because the next prime (27620107) can be obtained adding 27620081 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15335056 + 12285025 = 3916^2 + 3505^2 .

It is a cyclic number.

It is not a de Polignac number, because 27620081 - 2²² = 23425777 is a prime.

It is a super-2 number, since 2×27620081² = 1525737748893122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27620081.

It is not a weakly prime, because it can be changed into another prime (27620011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13810040 + 13810041.

It is an arithmetic number, because the mean of its divisors is an integer number (13810041).

Almost surely, 2^27620081 is an apocalyptic number.

It is an amenable number.

27620081 is a deficient number, since it is larger than the sum of its proper divisors (1).

27620081 is an equidigital number, since it uses as much as digits as its factorization.

27620081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 27620081 is about 5255.4810436344. The cubic root of 27620081 is about 302.2792360529.

The spelling of 27620081 in words is "twenty-seven million, six hundred twenty thousand, eighty-one".