8729671806 has 40 divisors (see below), whose sum is σ = 19977138720. Its totient is φ = 2847975552.

The previous prime is 8729671793. The next prime is 8729671807. The reversal of 8729671806 is 6081769278.

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 (8729671807) 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, 565651 + ... + 580878.

It is an arithmetic number, because the mean of its divisors is an integer number (499428468).

Almost surely, 2^8729671806 is an apocalyptic number.

8729671806 is an abundant number, since it is smaller than the sum of its proper divisors (11247466914).

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

8729671806 is a wasteful number, since it uses less digits than its factorization.

8729671806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146590 (or 1146581 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 8729671806 is about 93432.7127188331. The cubic root of 8729671806 is about 2059.0456356282.

The spelling of 8729671806 in words is "eight billion, seven hundred twenty-nine million, six hundred seventy-one thousand, eight hundred six".