684563404365486 has 12 divisors (see below), whose sum is σ = 1483220709458592. Its totient is φ = 228187801455156.

The previous prime is 684563404365443. The next prime is 684563404365527.

It is a happy number.

684563404365486 is a `hidden beast` number, since 6 + 8 + 4 + 5 + 6 + 3 + 40 + 4 + 36 + 548 + 6 = 666.

684563404365486 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19015650121246 + ... + 19015650121281.

It is an arithmetic number, because the mean of its divisors is an integer number (123601725788216).

Almost surely, 2^{684563404365486} is an apocalyptic number.

684563404365486 is an abundant number, since it is smaller than the sum of its proper divisors (798657305093106).

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

684563404365486 is a wasteful number, since it uses less digits than its factorization.

684563404365486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38031300242535 (or 38031300242532 counting only the distinct ones).

The product of its (nonzero) digits is 4777574400, while the sum is 72.

The spelling of 684563404365486 in words is "six hundred eighty-four trillion, five hundred sixty-three billion, four hundred four million, three hundred sixty-five thousand, four hundred eighty-six".