64855284 has 48 divisors (see below), whose sum is σ = 171554880. Its totient is φ = 18904320.

The previous prime is 64855283. The next prime is 64855363. The reversal of 64855284 is 48255846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64855283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7977 + ... + 13904.

It is an arithmetic number, because the mean of its divisors is an integer number (3574060).

Almost surely, 2^64855284 is an apocalyptic number.

It is an amenable number.

64855284 is an abundant number, since it is smaller than the sum of its proper divisors (106699596).

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

64855284 is a wasteful number, since it uses less digits than its factorization.

64855284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21920 (or 21918 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 64855284 is about 8053.2778419722. The cubic root of 64855284 is about 401.7739626774.

The spelling of 64855284 in words is "sixty-four million, eight hundred fifty-five thousand, two hundred eighty-four".