65855478 has 32 divisors (see below), whose sum is σ = 144178272. Its totient is φ = 19929600.

The previous prime is 65855459. The next prime is 65855483. The reversal of 65855478 is 87455856.

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, 2163 + ... + 11678.

It is an arithmetic number, because the mean of its divisors is an integer number (4505571).

Almost surely, 2^65855478 is an apocalyptic number.

65855478 is an abundant number, since it is smaller than the sum of its proper divisors (78322794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65855478 is a wasteful number, since it uses less digits than its factorization.

65855478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13920.

The product of its digits is 1344000, while the sum is 48.

The square root of 65855478 is about 8115.1388158182. The cubic root of 65855478 is about 403.8288127129.

The spelling of 65855478 in words is "sixty-five million, eight hundred fifty-five thousand, four hundred seventy-eight".