65678055 has 16 divisors (see below), whose sum is σ = 111266784. Its totient is φ = 32967680.

The previous prime is 65678009. The next prime is 65678083. The reversal of 65678055 is 55087656.

It is not a de Polignac number, because 65678055 - 2¹⁴ = 65661671 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 65677998 and 65678016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128526 + ... + 129035.

It is an arithmetic number, because the mean of its divisors is an integer number (6954174).

Almost surely, 2^65678055 is an apocalyptic number.

65678055 is a deficient number, since it is larger than the sum of its proper divisors (45588729).

65678055 is a wasteful number, since it uses less digits than its factorization.

65678055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257586.

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 65678055 is about 8104.1998371215. The cubic root of 65678055 is about 403.4658312192.

The spelling of 65678055 in words is "sixty-five million, six hundred seventy-eight thousand, fifty-five".