8523583681 has 2 divisors, whose sum is σ = 8523583682. Its totient is φ = 8523583680.

The previous prime is 8523583669. The next prime is 8523583693. The reversal of 8523583681 is 1863853258.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (8523583669) and next prime (8523583693).

It can be written as a sum of positive squares in only one way, i.e., 8518367025 + 5216656 = 92295^2 + 2284^2 .

It is a cyclic number.

It is not a de Polignac number, because 8523583681 - 2⁷ = 8523583553 is a prime.

It is a super-2 number, since 2×8523583681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8523583661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4261791840 + 4261791841.

It is an arithmetic number, because the mean of its divisors is an integer number (4261791841).

Almost surely, 2^8523583681 is an apocalyptic number.

It is an amenable number.

8523583681 is a deficient number, since it is larger than the sum of its proper divisors (1).

8523583681 is an equidigital number, since it uses as much as digits as its factorization.

8523583681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1382400, while the sum is 49.

The square root of 8523583681 is about 92323.2564471163. The cubic root of 8523583681 is about 2042.7132678675.

The spelling of 8523583681 in words is "eight billion, five hundred twenty-three million, five hundred eighty-three thousand, six hundred eighty-one".