27768379 has 2 divisors, whose sum is σ = 27768380. Its totient is φ = 27768378.

The previous prime is 27768373. The next prime is 27768401. The reversal of 27768379 is 97386772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27768379 - 2³ = 27768371 is a prime.

It is not a weakly prime, because it can be changed into another prime (27768371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13884189 + 13884190.

It is an arithmetic number, because the mean of its divisors is an integer number (13884190).

Almost surely, 2^27768379 is an apocalyptic number.

27768379 is a deficient number, since it is larger than the sum of its proper divisors (1).

27768379 is an equidigital number, since it uses as much as digits as its factorization.

27768379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 889056, while the sum is 49.

The square root of 27768379 is about 5269.5710451611. The cubic root of 27768379 is about 302.8192708602.

The spelling of 27768379 in words is "twenty-seven million, seven hundred sixty-eight thousand, three hundred seventy-nine".