27645461 has 2 divisors, whose sum is σ = 27645462. Its totient is φ = 27645460.

The previous prime is 27645433. The next prime is 27645467. The reversal of 27645461 is 16454672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22146436 + 5499025 = 4706^2 + 2345^2 .

It is a cyclic number.

It is not a de Polignac number, because 27645461 - 2¹⁰ = 27644437 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 (27645467) 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, 13822730 + 13822731.

It is an arithmetic number, because the mean of its divisors is an integer number (13822731).

Almost surely, 2^27645461 is an apocalyptic number.

It is an amenable number.

27645461 is a deficient number, since it is larger than the sum of its proper divisors (1).

27645461 is an equidigital number, since it uses as much as digits as its factorization.

27645461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 27645461 is about 5257.8951111638. The cubic root of 27645461 is about 302.3717955006.

The spelling of 27645461 in words is "twenty-seven million, six hundred forty-five thousand, four hundred sixty-one".