27696505 has 8 divisors (see below), whose sum is σ = 33264072. Its totient is φ = 22138368.

The previous prime is 27696503. The next prime is 27696517. The reversal of 27696505 is 50569672.

It can be written as a sum of positive squares in 4 ways, for example, as 14714896 + 12981609 = 3836^2 + 3603^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27696505 - 2¹ = 27696503 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27696503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10147 + ... + 12583.

It is an arithmetic number, because the mean of its divisors is an integer number (4158009).

Almost surely, 2^27696505 is an apocalyptic number.

It is an amenable number.

27696505 is a deficient number, since it is larger than the sum of its proper divisors (5567567).

27696505 is a wasteful number, since it uses less digits than its factorization.

27696505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4715.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 27696505 is about 5262.7469063218. The cubic root of 27696505 is about 302.5577787318.

The spelling of 27696505 in words is "twenty-seven million, six hundred ninety-six thousand, five hundred five".