27797617 has 2 divisors, whose sum is σ = 27797618. Its totient is φ = 27797616.

The previous prime is 27797603. The next prime is 27797621. The reversal of 27797617 is 71679772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21492496 + 6305121 = 4636^2 + 2511^2 .

It is a cyclic number.

It is not a de Polignac number, because 27797617 - 2⁷ = 27797489 is a prime.

It is not a weakly prime, because it can be changed into another prime (27797647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13898808 + 13898809.

It is an arithmetic number, because the mean of its divisors is an integer number (13898809).

Almost surely, 2^27797617 is an apocalyptic number.

It is an amenable number.

27797617 is a deficient number, since it is larger than the sum of its proper divisors (1).

27797617 is an equidigital number, since it uses as much as digits as its factorization.

27797617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259308, while the sum is 46.

The square root of 27797617 is about 5272.3445448870. The cubic root of 27797617 is about 302.9255154990.

The spelling of 27797617 in words is "twenty-seven million, seven hundred ninety-seven thousand, six hundred seventeen".