27691315 has 4 divisors (see below), whose sum is σ = 33229584. Its totient is φ = 22153048.

The previous prime is 27691297. The next prime is 27691327. The reversal of 27691315 is 51319672.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27691315 - 2⁷ = 27691187 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2769127 + ... + 2769136.

It is an arithmetic number, because the mean of its divisors is an integer number (8307396).

Almost surely, 2^27691315 is an apocalyptic number.

27691315 is a deficient number, since it is larger than the sum of its proper divisors (5538269).

27691315 is an equidigital number, since it uses as much as digits as its factorization.

27691315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5538268.

The product of its digits is 11340, while the sum is 34.

The square root of 27691315 is about 5262.2537947157. The cubic root of 27691315 is about 302.5388789589.

The spelling of 27691315 in words is "twenty-seven million, six hundred ninety-one thousand, three hundred fifteen".