820604466 has 32 divisors (see below), whose sum is σ = 1989345600. Its totient is φ = 248667840.

The previous prime is 820604437. The next prime is 820604479. The reversal of 820604466 is 664406028.

It is a happy number.

820604466 is a `hidden beast` number, since 8 + 2 + 0 + 604 + 46 + 6 = 666.

820604466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 820604466.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690151 + ... + 691338.

It is an arithmetic number, because the mean of its divisors is an integer number (62167050).

Almost surely, 2^820604466 is an apocalyptic number.

820604466 is an abundant number, since it is smaller than the sum of its proper divisors (1168741134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

820604466 is a wasteful number, since it uses less digits than its factorization.

820604466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381511 (or 1381505 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 820604466 is about 28646.1946163884. The cubic root of 820604466 is about 936.2200953489.

The spelling of 820604466 in words is "eight hundred twenty million, six hundred four thousand, four hundred sixty-six".