27769897 has 2 divisors, whose sum is σ = 27769898. Its totient is φ = 27769896.

The previous prime is 27769883. The next prime is 27769913. The reversal of 27769897 is 79896772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23853456 + 3916441 = 4884^2 + 1979^2 .

It is a cyclic number.

It is not a de Polignac number, because 27769897 - 2¹¹ = 27767849 is a prime.

It is not a weakly prime, because it can be changed into another prime (27769867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13884948 + 13884949.

It is an arithmetic number, because the mean of its divisors is an integer number (13884949).

Almost surely, 2^27769897 is an apocalyptic number.

It is an amenable number.

27769897 is a deficient number, since it is larger than the sum of its proper divisors (1).

27769897 is an equidigital number, since it uses as much as digits as its factorization.

27769897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2667168, while the sum is 55.

The square root of 27769897 is about 5269.7150776868. The cubic root of 27769897 is about 302.8247887826.

The spelling of 27769897 in words is "twenty-seven million, seven hundred sixty-nine thousand, eight hundred ninety-seven".