65457855 has 32 divisors (see below), whose sum is σ = 116925120. Its totient is φ = 34744320.

The previous prime is 65457829. The next prime is 65457863. The reversal of 65457855 is 55875456.

It is not a de Polignac number, because 65457855 - 2⁵ = 65457823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 65457855.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30415 + ... + 32495.

It is an arithmetic number, because the mean of its divisors is an integer number (3653910).

Almost surely, 2^65457855 is an apocalyptic number.

65457855 is a deficient number, since it is larger than the sum of its proper divisors (51467265).

65457855 is a wasteful number, since it uses less digits than its factorization.

65457855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328 (or 2322 counting only the distinct ones).

The product of its digits is 840000, while the sum is 45.

The square root of 65457855 is about 8090.6028823568. The cubic root of 65457855 is about 403.0144239717.

It can be divided in two parts, 6545 and 7855, that added together give a square (14400 = 120²).

The spelling of 65457855 in words is "sixty-five million, four hundred fifty-seven thousand, eight hundred fifty-five".