863312172 has 12 divisors (see below), whose sum is σ = 2014395096. Its totient is φ = 287770720.

The previous prime is 863312171. The next prime is 863312179. The reversal of 863312172 is 271213368.

863312172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (863312171) 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, 35971329 + ... + 35971352.

It is an arithmetic number, because the mean of its divisors is an integer number (167866258).

Almost surely, 2^863312172 is an apocalyptic number.

It is an amenable number.

863312172 is an abundant number, since it is smaller than the sum of its proper divisors (1151082924).

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

863312172 is a wasteful number, since it uses less digits than its factorization.

863312172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71942688 (or 71942686 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 863312172 is about 29382.1743919677. The cubic root of 863312172 is about 952.1878189677.

The spelling of 863312172 in words is "eight hundred sixty-three million, three hundred twelve thousand, one hundred seventy-two".