27420609 has 12 divisors (see below), whose sum is σ = 38839184. Its totient is φ = 17204544.

The previous prime is 27420583. The next prime is 27420611. The reversal of 27420609 is 90602472.

It is a happy number.

It is not a de Polignac number, because 27420609 - 2¹³ = 27412417 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27420509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14947 + ... + 16680.

Almost surely, 2^27420609 is an apocalyptic number.

It is an amenable number.

27420609 is a deficient number, since it is larger than the sum of its proper divisors (11418575).

27420609 is a wasteful number, since it uses less digits than its factorization.

27420609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31664 (or 31647 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 27420609 is about 5236.4691348274. The cubic root of 27420609 is about 301.5497911492.

The spelling of 27420609 in words is "twenty-seven million, four hundred twenty thousand, six hundred nine".