27645011 has 6 divisors (see below), whose sum is σ = 28899780. Its totient is φ = 26442548.

The previous prime is 27644987. The next prime is 27645041. The reversal of 27645011 is 11054672.

It is not a de Polignac number, because 27645011 - 2¹⁸ = 27382867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27645041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25601 + ... + 26658.

It is an arithmetic number, because the mean of its divisors is an integer number (4816630).

Almost surely, 2^27645011 is an apocalyptic number.

27645011 is a deficient number, since it is larger than the sum of its proper divisors (1254769).

27645011 is an equidigital number, since it uses as much as digits as its factorization.

27645011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52305 (or 52282 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 27645011 is about 5257.8523181999. The cubic root of 27645011 is about 302.3701548691.

Adding to 27645011 its reverse (11054672), we get a palindrome (38699683).

The spelling of 27645011 in words is "twenty-seven million, six hundred forty-five thousand, eleven".