27006921 has 12 divisors (see below), whose sum is σ = 40268800. Its totient is φ = 17423640.

The previous prime is 27006919. The next prime is 27006953. The reversal of 27006921 is 12960072.

It is not a de Polignac number, because 27006921 - 2¹ = 27006919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27001921) 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 11 ways as a sum of consecutive naturals, for example, 48121 + ... + 48678.

Almost surely, 2^27006921 is an apocalyptic number.

It is an amenable number.

27006921 is a deficient number, since it is larger than the sum of its proper divisors (13261879).

27006921 is a wasteful number, since it uses less digits than its factorization.

27006921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96836 (or 96833 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 27006921 is about 5196.8183535698. The cubic root of 27006921 is about 300.0256311434.

Adding to 27006921 its reverse (12960072), we get a palindrome (39966993).

The spelling of 27006921 in words is "twenty-seven million, six thousand, nine hundred twenty-one".