27760657 has 2 divisors, whose sum is σ = 27760658. Its totient is φ = 27760656.

The previous prime is 27760633. The next prime is 27760661. The reversal of 27760657 is 75606772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27499536 + 261121 = 5244^2 + 511^2 .

It is a cyclic number.

It is not a de Polignac number, because 27760657 - 2⁷ = 27760529 is a prime.

It is not a weakly prime, because it can be changed into another prime (27760697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13880328 + 13880329.

It is an arithmetic number, because the mean of its divisors is an integer number (13880329).

Almost surely, 2^27760657 is an apocalyptic number.

It is an amenable number.

27760657 is a deficient number, since it is larger than the sum of its proper divisors (1).

27760657 is an equidigital number, since it uses as much as digits as its factorization.

27760657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 27760657 is about 5268.8382970063. The cubic root of 27760657 is about 302.7911983153.

The spelling of 27760657 in words is "twenty-seven million, seven hundred sixty thousand, six hundred fifty-seven".