27688965 has 8 divisors (see below), whose sum is σ = 44302368. Its totient is φ = 14767440.

The previous prime is 27688961. The next prime is 27688979. The reversal of 27688965 is 56988672.

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

It is not a de Polignac number, because 27688965 - 2² = 27688961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27688961) 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, 922951 + ... + 922980.

It is an arithmetic number, because the mean of its divisors is an integer number (5537796).

Almost surely, 2^27688965 is an apocalyptic number.

It is an amenable number.

27688965 is a deficient number, since it is larger than the sum of its proper divisors (16613403).

27688965 is a wasteful number, since it uses less digits than its factorization.

27688965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845939.

The product of its digits is 1451520, while the sum is 51.

The square root of 27688965 is about 5262.0305016220. The cubic root of 27688965 is about 302.5303204815.

The spelling of 27688965 in words is "twenty-seven million, six hundred eighty-eight thousand, nine hundred sixty-five".