83646533 has 2 divisors, whose sum is σ = 83646534. Its totient is φ = 83646532.

The previous prime is 83646523. The next prime is 83646557. The reversal of 83646533 is 33564638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51008164 + 32638369 = 7142^2 + 5713^2 .

It is a cyclic number.

It is not a de Polignac number, because 83646533 - 2¹⁰ = 83645509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83646523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41823266 + 41823267.

It is an arithmetic number, because the mean of its divisors is an integer number (41823267).

Almost surely, 2^83646533 is an apocalyptic number.

It is an amenable number.

83646533 is a deficient number, since it is larger than the sum of its proper divisors (1).

83646533 is an equidigital number, since it uses as much as digits as its factorization.

83646533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 38.

The square root of 83646533 is about 9145.8478557212. The cubic root of 83646533 is about 437.3367584725.

The spelling of 83646533 in words is "eighty-three million, six hundred forty-six thousand, five hundred thirty-three".