863445312 has 56 divisors (see below), whose sum is σ = 2538374400. Its totient is φ = 287814528.

The previous prime is 863445311. The next prime is 863445361. The reversal of 863445312 is 213544368.

863445312 is a `hidden beast` number, since 8 + 634 + 4 + 5 + 3 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863445311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248112 + ... + 251567.

Almost surely, 2^863445312 is an apocalyptic number.

It is an amenable number.

863445312 is an abundant number, since it is smaller than the sum of its proper divisors (1674929088).

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

863445312 is a wasteful number, since it uses less digits than its factorization.

863445312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499700 (or 499684 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 863445312 is about 29384.4399640354. The cubic root of 863445312 is about 952.2367652523.

The spelling of 863445312 in words is "eight hundred sixty-three million, four hundred forty-five thousand, three hundred twelve".