820266033 has 8 divisors (see below), whose sum is σ = 1108670368. Its totient is φ = 539352864.

The previous prime is 820266011. The next prime is 820266071. The reversal of 820266033 is 330662028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 820266033 - 2²⁰ = 819217457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (820266833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872535 + ... + 1872972.

It is an arithmetic number, because the mean of its divisors is an integer number (138583796).

Almost surely, 2^820266033 is an apocalyptic number.

It is an amenable number.

820266033 is a deficient number, since it is larger than the sum of its proper divisors (288404335).

820266033 is a wasteful number, since it uses less digits than its factorization.

820266033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3745583.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 820266033 is about 28640.2868875296. The cubic root of 820266033 is about 936.0913726180.

The spelling of 820266033 in words is "eight hundred twenty million, two hundred sixty-six thousand, thirty-three".