27480643 has 2 divisors, whose sum is σ = 27480644. Its totient is φ = 27480642.

The previous prime is 27480623. The next prime is 27480647. The reversal of 27480643 is 34608472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27480643 - 2¹³ = 27472451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27480599 and 27480608.

It is not a weakly prime, because it can be changed into another prime (27480647) 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, 13740321 + 13740322.

It is an arithmetic number, because the mean of its divisors is an integer number (13740322).

Almost surely, 2^27480643 is an apocalyptic number.

27480643 is a deficient number, since it is larger than the sum of its proper divisors (1).

27480643 is an equidigital number, since it uses as much as digits as its factorization.

27480643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 27480643 is about 5242.1982984240. The cubic root of 27480643 is about 301.7696992800.

The spelling of 27480643 in words is "twenty-seven million, four hundred eighty thousand, six hundred forty-three".