862778113 has 4 divisors (see below), whose sum is σ = 866215728. Its totient is φ = 859340500.

The previous prime is 862778053. The next prime is 862778123. The reversal of 862778113 is 311877268.

862778113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-862778113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 862778113.

It is not an unprimeable number, because it can be changed into a prime (862778123) 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, 1718431 + ... + 1718932.

It is an arithmetic number, because the mean of its divisors is an integer number (216553932).

Almost surely, 2^862778113 is an apocalyptic number.

It is an amenable number.

862778113 is a deficient number, since it is larger than the sum of its proper divisors (3437615).

862778113 is a wasteful number, since it uses less digits than its factorization.

862778113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437614.

The product of its digits is 112896, while the sum is 43.

The square root of 862778113 is about 29373.0848396964. The cubic root of 862778113 is about 951.9914321575.

The spelling of 862778113 in words is "eight hundred sixty-two million, seven hundred seventy-eight thousand, one hundred thirteen".