65855875 has 24 divisors (see below), whose sum is σ = 87355008. Its totient is φ = 49558400.

The previous prime is 65855863. The next prime is 65855879. The reversal of 65855875 is 57855856.

It is a happy number.

It is not a de Polignac number, because 65855875 - 2¹⁹ = 65331587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65855879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35214 + ... + 37036.

It is an arithmetic number, because the mean of its divisors is an integer number (3639792).

Almost surely, 2^65855875 is an apocalyptic number.

65855875 is a deficient number, since it is larger than the sum of its proper divisors (21499133).

65855875 is a wasteful number, since it uses less digits than its factorization.

65855875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872 (or 1845 counting only the distinct ones).

The product of its digits is 1680000, while the sum is 49.

The square root of 65855875 is about 8115.1632762379. The cubic root of 65855875 is about 403.8296241854.

The spelling of 65855875 in words is "sixty-five million, eight hundred fifty-five thousand, eight hundred seventy-five".