8067420820 has 12 divisors (see below), whose sum is σ = 16941583764. Its totient is φ = 3226968320.

The previous prime is 8067420799. The next prime is 8067420827. The reversal of 8067420820 is 280247608.

It can be written as a sum of positive squares in 2 ways, for example, as 5097388816 + 2970032004 = 71396^2 + 54498^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8067420820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8067420827) 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, 201685501 + ... + 201685540.

It is an arithmetic number, because the mean of its divisors is an integer number (1411798647).

Almost surely, 2^8067420820 is an apocalyptic number.

It is an amenable number.

8067420820 is an abundant number, since it is smaller than the sum of its proper divisors (8874162944).

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

8067420820 is a wasteful number, since it uses less digits than its factorization.

8067420820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403371050 (or 403371048 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 8067420820 is about 89818.8221922332. The cubic root of 8067420820 is about 2005.6026919324.

The spelling of 8067420820 in words is "eight billion, sixty-seven million, four hundred twenty thousand, eight hundred twenty".