27645073 has 2 divisors, whose sum is σ = 27645074. Its totient is φ = 27645072.

The previous prime is 27645053. The next prime is 27645083. The reversal of 27645073 is 37054672.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24285184 + 3359889 = 4928^2 + 1833^2 .

It is a cyclic number.

It is not a de Polignac number, because 27645073 - 2⁵ = 27645041 is a prime.

It is a super-2 number, since 2×27645073² = 1528500122350658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27645053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13822536 + 13822537.

It is an arithmetic number, because the mean of its divisors is an integer number (13822537).

Almost surely, 2^27645073 is an apocalyptic number.

It is an amenable number.

27645073 is a deficient number, since it is larger than the sum of its proper divisors (1).

27645073 is an equidigital number, since it uses as much as digits as its factorization.

27645073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 27645073 is about 5257.8582141401. The cubic root of 27645073 is about 302.3703809127.

The spelling of 27645073 in words is "twenty-seven million, six hundred forty-five thousand, seventy-three".