82785433 has 2 divisors, whose sum is σ = 82785434. Its totient is φ = 82785432.

The previous prime is 82785421. The next prime is 82785457. The reversal of 82785433 is 33458728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80138304 + 2647129 = 8952^2 + 1627^2 .

It is a cyclic number.

It is not a de Polignac number, because 82785433 - 2⁹ = 82784921 is a prime.

It is a super-3 number, since 3×82785433³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (82785403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41392716 + 41392717.

It is an arithmetic number, because the mean of its divisors is an integer number (41392717).

Almost surely, 2^82785433 is an apocalyptic number.

It is an amenable number.

82785433 is a deficient number, since it is larger than the sum of its proper divisors (1).

82785433 is an equidigital number, since it uses as much as digits as its factorization.

82785433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The square root of 82785433 is about 9098.6500647074. The cubic root of 82785433 is about 435.8308566613.

The spelling of 82785433 in words is "eighty-two million, seven hundred eighty-five thousand, four hundred thirty-three".