8642533 has 2 divisors, whose sum is σ = 8642534. Its totient is φ = 8642532.

The previous prime is 8642519. The next prime is 8642567. The reversal of 8642533 is 3352468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8054244 + 588289 = 2838^2 + 767^2 .

It is a cyclic number.

It is not a de Polignac number, because 8642533 - 2²¹ = 6545381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8642495 and 8642504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8642033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4321266 + 4321267.

It is an arithmetic number, because the mean of its divisors is an integer number (4321267).

Almost surely, 2^8642533 is an apocalyptic number.

It is an amenable number.

8642533 is a deficient number, since it is larger than the sum of its proper divisors (1).

8642533 is an equidigital number, since it uses as much as digits as its factorization.

8642533 is an odious number, because the sum of its binary digits is odd.

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

The square root of 8642533 is about 2939.8185318145. The cubic root of 8642533 is about 205.2171642765.

The spelling of 8642533 in words is "eight million, six hundred forty-two thousand, five hundred thirty-three".