27698897 has 4 divisors (see below), whose sum is σ = 27804480. Its totient is φ = 27593316.

The previous prime is 27698893. The next prime is 27698911. The reversal of 27698897 is 79889672.

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 27698897 - 2² = 27698893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27698893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52397 + ... + 52922.

It is an arithmetic number, because the mean of its divisors is an integer number (6951120).

Almost surely, 2^27698897 is an apocalyptic number.

It is an amenable number.

27698897 is a deficient number, since it is larger than the sum of its proper divisors (105583).

27698897 is a wasteful number, since it uses less digits than its factorization.

27698897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105582.

The product of its digits is 3048192, while the sum is 56.

The square root of 27698897 is about 5262.9741591613. The cubic root of 27698897 is about 302.5664885837.

The spelling of 27698897 in words is "twenty-seven million, six hundred ninety-eight thousand, eight hundred ninety-seven".