820466446 has 8 divisors (see below), whose sum is σ = 1235849760. Its totient is φ = 408516528.

The previous prime is 820466441. The next prime is 820466459. The reversal of 820466446 is 644664028.

820466446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 820466399 and 820466408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820466441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857751 + ... + 858706.

It is an arithmetic number, because the mean of its divisors is an integer number (154481220).

Almost surely, 2^820466446 is an apocalyptic number.

820466446 is a deficient number, since it is larger than the sum of its proper divisors (415383314).

820466446 is a wasteful number, since it uses less digits than its factorization.

820466446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716698.

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 820466446 is about 28643.7854691031. The cubic root of 820466446 is about 936.1676038226.

The spelling of 820466446 in words is "eight hundred twenty million, four hundred sixty-six thousand, four hundred forty-six".