8523643 has 2 divisors, whose sum is σ = 8523644. Its totient is φ = 8523642.

The previous prime is 8523637. The next prime is 8523659. The reversal of 8523643 is 3463258.

8523643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8523643 - 2⁵ = 8523611 is a prime.

It is a d-powerful number, because it can be written as 8 + 5⁵ + 2²³ + 3³ + 6⁶ + 4⁸ + 3⁹ .

It is not a weakly prime, because it can be changed into another prime (8523043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4261821 + 4261822.

It is an arithmetic number, because the mean of its divisors is an integer number (4261822).

Almost surely, 2^8523643 is an apocalyptic number.

8523643 is a deficient number, since it is larger than the sum of its proper divisors (1).

8523643 is an equidigital number, since it uses as much as digits as its factorization.

8523643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

The square root of 8523643 is about 2919.5278727904. The cubic root of 8523643 is about 204.2718006540.

The spelling of 8523643 in words is "eight million, five hundred twenty-three thousand, six hundred forty-three".