27240691 has 2 divisors, whose sum is σ = 27240692. Its totient is φ = 27240690.

The previous prime is 27240677. The next prime is 27240727. The reversal of 27240691 is 19604272.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27240691 - 2¹¹ = 27238643 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27240601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13620345 + 13620346.

It is an arithmetic number, because the mean of its divisors is an integer number (13620346).

Almost surely, 2^27240691 is an apocalyptic number.

27240691 is a deficient number, since it is larger than the sum of its proper divisors (1).

27240691 is an equidigital number, since it uses as much as digits as its factorization.

27240691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 27240691 is about 5219.2615378040. The cubic root of 27240691 is about 300.8888122568. Note that the first 4 decimals are identical.

The spelling of 27240691 in words is "twenty-seven million, two hundred forty thousand, six hundred ninety-one".