27796681 has 4 divisors (see below), whose sum is σ = 30323664. Its totient is φ = 25269700.

The previous prime is 27796679. The next prime is 27796687. The reversal of 27796681 is 18669772.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27796681 - 2¹ = 27796679 is a prime.

It is a super-2 number, since 2×27796681² = 1545310949231522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27796687) 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, 1263475 + ... + 1263496.

It is an arithmetic number, because the mean of its divisors is an integer number (7580916).

Almost surely, 2^27796681 is an apocalyptic number.

It is an amenable number.

27796681 is a deficient number, since it is larger than the sum of its proper divisors (2526983).

27796681 is a wasteful number, since it uses less digits than its factorization.

27796681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526982.

The product of its digits is 254016, while the sum is 46.

The square root of 27796681 is about 5272.2557790760. The cubic root of 27796681 is about 302.9221154298.

The spelling of 27796681 in words is "twenty-seven million, seven hundred ninety-six thousand, six hundred eighty-one".