27642065 has 16 divisors (see below), whose sum is σ = 36599040. Its totient is φ = 19873920.

The previous prime is 27642061. The next prime is 27642091. The reversal of 27642065 is 56024672.

It is not a de Polignac number, because 27642065 - 2² = 27642061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27642061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2072 + ... + 7718.

It is an arithmetic number, because the mean of its divisors is an integer number (2287440).

Almost surely, 2^27642065 is an apocalyptic number.

It is an amenable number.

27642065 is a deficient number, since it is larger than the sum of its proper divisors (8956975).

27642065 is a wasteful number, since it uses less digits than its factorization.

27642065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 27642065 is about 5257.5721583256. The cubic root of 27642065 is about 302.3594137614.

The spelling of 27642065 in words is "twenty-seven million, six hundred forty-two thousand, sixty-five".