27740564 has 12 divisors (see below), whose sum is σ = 48703284. Its totient is φ = 13825344.

The previous prime is 27740563. The next prime is 27740579. The reversal of 27740564 is 46504772.

It can be written as a sum of positive squares in 2 ways, for example, as 9610000 + 18130564 = 3100^2 + 4258^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27740563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9827 + ... + 12330.

It is an arithmetic number, because the mean of its divisors is an integer number (4058607).

Almost surely, 2^27740564 is an apocalyptic number.

It is an amenable number.

27740564 is a deficient number, since it is larger than the sum of its proper divisors (20962720).

27740564 is a wasteful number, since it uses less digits than its factorization.

27740564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22474 (or 22472 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 27740564 is about 5266.9311747924. The cubic root of 27740564 is about 302.7181278546.

The spelling of 27740564 in words is "twenty-seven million, seven hundred forty thousand, five hundred sixty-four".