855595776 has 144 divisors (see below), whose sum is σ = 2620767744. Its totient is φ = 242737152.

The previous prime is 855595739. The next prime is 855595777. The reversal of 855595776 is 677595558.

It is a happy number.

It is a super-4 number, since 4×855595776⁴ (a number of 37 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (855595777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 897316 + ... + 898268.

It is an arithmetic number, because the mean of its divisors is an integer number (18199776).

Almost surely, 2^855595776 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 855595776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310383872).

855595776 is an abundant number, since it is smaller than the sum of its proper divisors (1765171968).

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

855595776 is a wasteful number, since it uses less digits than its factorization.

855595776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146 (or 1132 counting only the distinct ones).

The product of its digits is 13230000, while the sum is 57.

The square root of 855595776 is about 29250.5688149820. The cubic root of 855595776 is about 949.3423984602.

The spelling of 855595776 in words is "eight hundred fifty-five million, five hundred ninety-five thousand, seven hundred seventy-six".