27661033 has 2 divisors, whose sum is σ = 27661034. Its totient is φ = 27661032.

The previous prime is 27661031. The next prime is 27661037. The reversal of 27661033 is 33016672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27071209 + 589824 = 5203^2 + 768^2 .

It is a cyclic number.

It is not a de Polignac number, because 27661033 - 2¹ = 27661031 is a prime.

Together with 27661031, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 27660992 and 27661010.

It is not a weakly prime, because it can be changed into another prime (27661031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13830516 + 13830517.

It is an arithmetic number, because the mean of its divisors is an integer number (13830517).

Almost surely, 2^27661033 is an apocalyptic number.

It is an amenable number.

27661033 is a deficient number, since it is larger than the sum of its proper divisors (1).

27661033 is an equidigital number, since it uses as much as digits as its factorization.

27661033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 27661033 is about 5259.3757234105. The cubic root of 27661033 is about 302.4285576795.

The spelling of 27661033 in words is "twenty-seven million, six hundred sixty-one thousand, thirty-three".