855420064 has 24 divisors (see below), whose sum is σ = 1725186708. Its totient is φ = 417277440.

The previous prime is 855419987. The next prime is 855420067. The reversal of 855420064 is 460024558.

855420064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 789160464 + 66259600 = 28092^2 + 8140^2 .

It is not an unprimeable number, because it can be changed into a prime (855420067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324687 + ... + 327310.

Almost surely, 2^855420064 is an apocalyptic number.

It is an amenable number.

855420064 is an abundant number, since it is smaller than the sum of its proper divisors (869766644).

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

855420064 is a wasteful number, since it uses less digits than its factorization.

855420064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652048 (or 652040 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 855420064 is about 29247.5650952349. The cubic root of 855420064 is about 949.2774058252.

The spelling of 855420064 in words is "eight hundred fifty-five million, four hundred twenty thousand, sixty-four".