8726380805 has 16 divisors (see below), whose sum is σ = 10860722688. Its totient is φ = 6723864000.

The previous prime is 8726380801. The next prime is 8726380811. The reversal of 8726380805 is 5080836278.

It is not a de Polignac number, because 8726380805 - 2² = 8726380801 is a prime.

It is a super-2 number, since 2×8726380805² (a number of 21 digits) contains 22 as substring.

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 8726380805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8726380801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100706 + ... + 166115.

It is an arithmetic number, because the mean of its divisors is an integer number (678795168).

Almost surely, 2^8726380805 is an apocalyptic number.

It is an amenable number.

8726380805 is a deficient number, since it is larger than the sum of its proper divisors (2134341883).

8726380805 is a wasteful number, since it uses less digits than its factorization.

8726380805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267068.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 8726380805 is about 93415.0994486437. The cubic root of 8726380805 is about 2058.7868564090.

The spelling of 8726380805 in words is "eight billion, seven hundred twenty-six million, three hundred eighty thousand, eight hundred five".