27965977 has 16 divisors (see below), whose sum is σ = 31328640. Its totient is φ = 24796800.

The previous prime is 27965957. The next prime is 27965981. The reversal of 27965977 is 77956972.

It is not a de Polignac number, because 27965977 - 2⁷ = 27965849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27965957) 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 15 ways as a sum of consecutive naturals, for example, 37474 + ... + 38212.

It is an arithmetic number, because the mean of its divisors is an integer number (1958040).

Almost surely, 2^27965977 is an apocalyptic number.

It is an amenable number.

27965977 is a deficient number, since it is larger than the sum of its proper divisors (3362663).

27965977 is a wasteful number, since it uses less digits than its factorization.

27965977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its digits is 1666980, while the sum is 52.

The square root of 27965977 is about 5288.2867736158. The cubic root of 27965977 is about 303.5358546392.

The spelling of 27965977 in words is "twenty-seven million, nine hundred sixty-five thousand, nine hundred seventy-seven".