684584520102 has 80 divisors (see below), whose sum is σ = 1753276200192. Its totient is φ = 195577694640.

The previous prime is 684584520071. The next prime is 684584520121. The reversal of 684584520102 is 201025485486.

684584520102 is a `hidden beast` number, since 6 + 8 + 4 + 584 + 52 + 0 + 10 + 2 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17025073 + ... + 17065235.

Almost surely, 2^684584520102 is an apocalyptic number.

684584520102 is an abundant number, since it is smaller than the sum of its proper divisors (1068691680090).

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

684584520102 is a wasteful number, since it uses less digits than its factorization.

684584520102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55215 (or 55206 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

The spelling of 684584520102 in words is "six hundred eighty-four billion, five hundred eighty-four million, five hundred twenty thousand, one hundred two".