684404562 has 16 divisors (see below), whose sum is σ = 1369066752. Its totient is φ = 228091920.

The previous prime is 684404561. The next prime is 684404593. The reversal of 684404562 is 265404486.

684404562 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 684404562.

It is not an unprimeable number, because it can be changed into a prime (684404561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52063 + ... + 63869.

It is an arithmetic number, because the mean of its divisors is an integer number (85566672).

Almost surely, 2^684404562 is an apocalyptic number.

684404562 is an abundant number, since it is smaller than the sum of its proper divisors (684662190).

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

684404562 is a wasteful number, since it uses less digits than its factorization.

684404562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21473.

The product of its (nonzero) digits is 184320, while the sum is 39.

The square root of 684404562 is about 26161.1269252683. The cubic root of 684404562 is about 881.2604878989.

The spelling of 684404562 in words is "six hundred eighty-four million, four hundred four thousand, five hundred sixty-two".