27679121 has 4 divisors (see below), whose sum is σ = 27890544. Its totient is φ = 27467700.

The previous prime is 27679117. The next prime is 27679123. The reversal of 27679121 is 12197672.

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 27679121 - 2² = 27679117 is a prime.

It is a super-2 number, since 2×27679121² = 1532267478665282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27679123) 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, 105515 + ... + 105776.

It is an arithmetic number, because the mean of its divisors is an integer number (6972636).

Almost surely, 2^27679121 is an apocalyptic number.

It is an amenable number.

27679121 is a deficient number, since it is larger than the sum of its proper divisors (211423).

27679121 is a wasteful number, since it uses less digits than its factorization.

27679121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211422.

The product of its digits is 10584, while the sum is 35.

The square root of 27679121 is about 5261.0950381076. The cubic root of 27679121 is about 302.4944643023.

It can be divided in two parts, 276 and 79121, that added together give a palindrome (79397).

The spelling of 27679121 in words is "twenty-seven million, six hundred seventy-nine thousand, one hundred twenty-one".