27794621 has 2 divisors, whose sum is σ = 27794622. Its totient is φ = 27794620.

The previous prime is 27794617. The next prime is 27794639. The reversal of 27794621 is 12649772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17522596 + 10272025 = 4186^2 + 3205^2 .

It is a cyclic number.

It is not a de Polignac number, because 27794621 - 2² = 27794617 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 (27794651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13897310 + 13897311.

It is an arithmetic number, because the mean of its divisors is an integer number (13897311).

Almost surely, 2^27794621 is an apocalyptic number.

It is an amenable number.

27794621 is a deficient number, since it is larger than the sum of its proper divisors (1).

27794621 is an equidigital number, since it uses as much as digits as its factorization.

27794621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 27794621 is about 5272.0604131592. The cubic root of 27794621 is about 302.9146321026.

The spelling of 27794621 in words is "twenty-seven million, seven hundred ninety-four thousand, six hundred twenty-one".