27657061 has 2 divisors, whose sum is σ = 27657062. Its totient is φ = 27657060.

The previous prime is 27657029. The next prime is 27657067. The reversal of 27657061 is 16075672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16892100 + 10764961 = 4110^2 + 3281^2 .

It is a cyclic number.

It is not a de Polignac number, because 27657061 - 2⁵ = 27657029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27657067) 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, 13828530 + 13828531.

It is an arithmetic number, because the mean of its divisors is an integer number (13828531).

Almost surely, 2^27657061 is an apocalyptic number.

It is an amenable number.

27657061 is a deficient number, since it is larger than the sum of its proper divisors (1).

27657061 is an equidigital number, since it uses as much as digits as its factorization.

27657061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 27657061 is about 5258.9980984975. The cubic root of 27657061 is about 302.4140811927.

The spelling of 27657061 in words is "twenty-seven million, six hundred fifty-seven thousand, sixty-one".