8204870061 has 6 divisors (see below), whose sum is σ = 11851478990. Its totient is φ = 5469913368.

The previous prime is 8204870053. The next prime is 8204870071. The reversal of 8204870061 is 1600784028.

It can be written as a sum of positive squares in only one way, i.e., 4394894436 + 3809975625 = 66294^2 + 61725^2 .

It is not a de Polignac number, because 8204870061 - 2³ = 8204870053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8204869998 and 8204870025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8204870071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 455826106 + ... + 455826123.

Almost surely, 2^8204870061 is an apocalyptic number.

It is an amenable number.

8204870061 is a deficient number, since it is larger than the sum of its proper divisors (3646608929).

8204870061 is a wasteful number, since it uses less digits than its factorization.

8204870061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911652235 (or 911652232 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 8204870061 is about 90580.7378033542. The cubic root of 8204870061 is about 2016.9288085100.

The spelling of 8204870061 in words is "eight billion, two hundred four million, eight hundred seventy thousand, sixty-one".