806872580 has 12 divisors (see below), whose sum is σ = 1694432460. Its totient is φ = 322749024.

The previous prime is 806872571. The next prime is 806872607. The reversal of 806872580 is 85278608.

It can be written as a sum of positive squares in 2 ways, for example, as 482944576 + 323928004 = 21976^2 + 17998^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20171795 + ... + 20171834.

It is an arithmetic number, because the mean of its divisors is an integer number (141202705).

Almost surely, 2^806872580 is an apocalyptic number.

It is an amenable number.

806872580 is an abundant number, since it is smaller than the sum of its proper divisors (887559880).

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

806872580 is a wasteful number, since it uses less digits than its factorization.

806872580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40343638 (or 40343636 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 806872580 is about 28405.5026359331. The cubic root of 806872580 is about 930.9684981321.

The spelling of 806872580 in words is "eight hundred six million, eight hundred seventy-two thousand, five hundred eighty".