27390641 has 2 divisors, whose sum is σ = 27390642. Its totient is φ = 27390640.

The previous prime is 27390637. The next prime is 27390667. The reversal of 27390641 is 14609372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23001616 + 4389025 = 4796^2 + 2095^2 .

It is a cyclic number.

It is not a de Polignac number, because 27390641 - 2² = 27390637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27390598 and 27390607.

It is not a weakly prime, because it can be changed into another prime (27390611) 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, 13695320 + 13695321.

It is an arithmetic number, because the mean of its divisors is an integer number (13695321).

Almost surely, 2^27390641 is an apocalyptic number.

It is an amenable number.

27390641 is a deficient number, since it is larger than the sum of its proper divisors (1).

27390641 is an equidigital number, since it uses as much as digits as its factorization.

27390641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 27390641 is about 5233.6068824473. The cubic root of 27390641 is about 301.4398964557.

The spelling of 27390641 in words is "twenty-seven million, three hundred ninety thousand, six hundred forty-one".