8475436861 has 2 divisors, whose sum is σ = 8475436862. Its totient is φ = 8475436860.

The previous prime is 8475436843. The next prime is 8475436889. The reversal of 8475436861 is 1686345748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6126192900 + 2349243961 = 78270^2 + 48469^2 .

It is a cyclic number.

It is not a de Polignac number, because 8475436861 - 2⁷ = 8475436733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8475436799 and 8475436808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8475436841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4237718430 + 4237718431.

It is an arithmetic number, because the mean of its divisors is an integer number (4237718431).

Almost surely, 2^8475436861 is an apocalyptic number.

It is an amenable number.

8475436861 is a deficient number, since it is larger than the sum of its proper divisors (1).

8475436861 is an equidigital number, since it uses as much as digits as its factorization.

8475436861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 52.

The square root of 8475436861 is about 92062.1358702914. The cubic root of 8475436861 is about 2038.8598060220.

The spelling of 8475436861 in words is "eight billion, four hundred seventy-five million, four hundred thirty-six thousand, eight hundred sixty-one".