868928071 has 4 divisors (see below), whose sum is σ = 947921544. Its totient is φ = 789934600.

The previous prime is 868928029. The next prime is 868928107. The reversal of 868928071 is 170829868.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868928071 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868928771) 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, 39496720 + ... + 39496741.

It is an arithmetic number, because the mean of its divisors is an integer number (236980386).

Almost surely, 2^868928071 is an apocalyptic number.

868928071 is a deficient number, since it is larger than the sum of its proper divisors (78993473).

868928071 is a wasteful number, since it uses less digits than its factorization.

868928071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78993472.

The product of its (nonzero) digits is 387072, while the sum is 49.

The square root of 868928071 is about 29477.5859086188. The cubic root of 868928071 is about 954.2480383108.

The spelling of 868928071 in words is "eight hundred sixty-eight million, nine hundred twenty-eight thousand, seventy-one".