27020565 has 144 divisors (see below), whose sum is σ = 61663680. Its totient is φ = 10782720.

The previous prime is 27020563. The next prime is 27020569. The reversal of 27020565 is 56502072.

It is not a de Polignac number, because 27020565 - 2¹ = 27020563 is a prime.

It is a super-2 number, since 2×27020565² = 1460221865838450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27020563) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1422126 + ... + 1422144.

It is an arithmetic number, because the mean of its divisors is an integer number (428220).

Almost surely, 2^27020565 is an apocalyptic number.

It is an amenable number.

27020565 is an abundant number, since it is smaller than the sum of its proper divisors (34643115).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27020565 is a wasteful number, since it uses less digits than its factorization.

27020565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 27020565 is about 5198.1309140883. The cubic root of 27020565 is about 300.0761473370.

The spelling of 27020565 in words is "twenty-seven million, twenty thousand, five hundred sixty-five".