27648977 has 8 divisors (see below), whose sum is σ = 28900200. Its totient is φ = 26417664.

The previous prime is 27648961. The next prime is 27648979. The reversal of 27648977 is 77984672.

It can be written as a sum of positive squares in 4 ways, for example, as 9339136 + 18309841 = 3056^2 + 4279^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 27648977 - 2⁴ = 27648961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27648979) 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, 2102 + ... + 7727.

It is an arithmetic number, because the mean of its divisors is an integer number (3612525).

Almost surely, 2^27648977 is an apocalyptic number.

It is an amenable number.

27648977 is a deficient number, since it is larger than the sum of its proper divisors (1251223).

27648977 is an equidigital number, since it uses as much as digits as its factorization.

27648977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9955.

The product of its digits is 1185408, while the sum is 50.

The square root of 27648977 is about 5258.2294548641. The cubic root of 27648977 is about 302.3846136888.

The spelling of 27648977 in words is "twenty-seven million, six hundred forty-eight thousand, nine hundred seventy-seven".