820593212 has 6 divisors (see below), whose sum is σ = 1436038128. Its totient is φ = 410296604.

The previous prime is 820593211. The next prime is 820593233. The reversal of 820593212 is 212395028.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820593211) 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, 102574148 + ... + 102574155.

It is an arithmetic number, because the mean of its divisors is an integer number (239339688).

Almost surely, 2^820593212 is an apocalyptic number.

It is an amenable number.

820593212 is a deficient number, since it is larger than the sum of its proper divisors (615444916).

820593212 is a wasteful number, since it uses less digits than its factorization.

820593212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205148307 (or 205148305 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 820593212 is about 28645.9981847378. The cubic root of 820593212 is about 936.2158154676.

The spelling of 820593212 in words is "eight hundred twenty million, five hundred ninety-three thousand, two hundred twelve".