27740497 has 2 divisors, whose sum is σ = 27740498. Its totient is φ = 27740496.

The previous prime is 27740473. The next prime is 27740519. The reversal of 27740497 is 79404772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19989841 + 7750656 = 4471^2 + 2784^2 .

It is a cyclic number.

It is not a de Polignac number, because 27740497 - 2¹⁹ = 27216209 is a prime.

It is not a weakly prime, because it can be changed into another prime (27740407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13870248 + 13870249.

It is an arithmetic number, because the mean of its divisors is an integer number (13870249).

Almost surely, 2^27740497 is an apocalyptic number.

It is an amenable number.

27740497 is a deficient number, since it is larger than the sum of its proper divisors (1).

27740497 is an equidigital number, since it uses as much as digits as its factorization.

27740497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 27740497 is about 5266.9248143485. The cubic root of 27740497 is about 302.7178841425.

The spelling of 27740497 in words is "twenty-seven million, seven hundred forty thousand, four hundred ninety-seven".