855336672 has 144 divisors (see below), whose sum is σ = 2610120240. Its totient is φ = 275208192.

The previous prime is 855336613. The next prime is 855336679. The reversal of 855336672 is 276633558.

855336672 is a `hidden beast` number, since 8 + 553 + 36 + 67 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855336679) 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 23 ways as a sum of consecutive naturals, for example, 223608 + ... + 227400.

It is an arithmetic number, because the mean of its divisors is an integer number (18125835).

Almost surely, 2^855336672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855336672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1305060120).

855336672 is an abundant number, since it is smaller than the sum of its proper divisors (1754783568).

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

855336672 is a wasteful number, since it uses less digits than its factorization.

855336672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847 (or 3827 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 855336672 is about 29246.1394375394. The cubic root of 855336672 is about 949.2465575448.

The spelling of 855336672 in words is "eight hundred fifty-five million, three hundred thirty-six thousand, six hundred seventy-two".