27345641 has 2 divisors, whose sum is σ = 27345642. Its totient is φ = 27345640.

The previous prime is 27345623. The next prime is 27345653. The reversal of 27345641 is 14654372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20894041 + 6451600 = 4571^2 + 2540^2 .

It is a cyclic number.

It is not a de Polignac number, because 27345641 - 2¹⁰ = 27344617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27345598 and 27345607.

It is not a weakly prime, because it can be changed into another prime (27345671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13672820 + 13672821.

It is an arithmetic number, because the mean of its divisors is an integer number (13672821).

Almost surely, 2^27345641 is an apocalyptic number.

It is an amenable number.

27345641 is a deficient number, since it is larger than the sum of its proper divisors (1).

27345641 is an equidigital number, since it uses as much as digits as its factorization.

27345641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 32.

The square root of 27345641 is about 5229.3059768960. The cubic root of 27345641 is about 301.2747277441.

The spelling of 27345641 in words is "twenty-seven million, three hundred forty-five thousand, six hundred forty-one".