27653893 has 2 divisors, whose sum is σ = 27653894. Its totient is φ = 27653892.

The previous prime is 27653881. The next prime is 27653909. The reversal of 27653893 is 39835672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14455204 + 13198689 = 3802^2 + 3633^2 .

It is a cyclic number.

It is not a de Polignac number, because 27653893 - 2¹⁷ = 27522821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27653693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13826946 + 13826947.

It is an arithmetic number, because the mean of its divisors is an integer number (13826947).

Almost surely, 2^27653893 is an apocalyptic number.

It is an amenable number.

27653893 is a deficient number, since it is larger than the sum of its proper divisors (1).

27653893 is an equidigital number, since it uses as much as digits as its factorization.

27653893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 43.

The square root of 27653893 is about 5258.6968918165. The cubic root of 27653893 is about 302.4025339982.

The spelling of 27653893 in words is "twenty-seven million, six hundred fifty-three thousand, eight hundred ninety-three".