868733813 has 4 divisors (see below), whose sum is σ = 919835820. Its totient is φ = 817631808.

The previous prime is 868733807. The next prime is 868733819. The reversal of 868733813 is 318337868.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (868733807) and next prime (868733819).

It can be written as a sum of positive squares in 2 ways, for example, as 729918289 + 138815524 = 27017^2 + 11782^2 .

It is a cyclic number.

It is not a de Polignac number, because 868733813 - 2⁴ = 868733797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868733819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25550978 + ... + 25551011.

It is an arithmetic number, because the mean of its divisors is an integer number (229958955).

Almost surely, 2^868733813 is an apocalyptic number.

It is an amenable number.

868733813 is a deficient number, since it is larger than the sum of its proper divisors (51102007).

868733813 is a wasteful number, since it uses less digits than its factorization.

868733813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51102006.

The product of its digits is 580608, while the sum is 47.

The square root of 868733813 is about 29474.2907124158. The cubic root of 868733813 is about 954.1769222859.

The spelling of 868733813 in words is "eight hundred sixty-eight million, seven hundred thirty-three thousand, eight hundred thirteen".