868809726 has 40 divisors (see below), whose sum is σ = 1948644984. Its totient is φ = 289325520.

The previous prime is 868809707. The next prime is 868809727. The reversal of 868809726 is 627908868.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868809727) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 233541 + ... + 237231.

Almost surely, 2^868809726 is an apocalyptic number.

868809726 is an abundant number, since it is smaller than the sum of its proper divisors (1079835258).

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

868809726 is a wasteful number, since it uses less digits than its factorization.

868809726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5158 (or 5149 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The square root of 868809726 is about 29475.5784676060. The cubic root of 868809726 is about 954.2047145824.

The spelling of 868809726 in words is "eight hundred sixty-eight million, eight hundred nine thousand, seven hundred twenty-six".