684128082 has 32 divisors (see below), whose sum is σ = 1494653184. Its totient is φ = 207032400.

The previous prime is 684128051. The next prime is 684128101. The reversal of 684128082 is 280821486.

It is a self number, because there is not a number n which added to its sum of digits gives 684128082.

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, 45357 + ... + 58527.

It is an arithmetic number, because the mean of its divisors is an integer number (46707912).

Almost surely, 2^684128082 is an apocalyptic number.

684128082 is an abundant number, since it is smaller than the sum of its proper divisors (810525102).

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

684128082 is a wasteful number, since it uses less digits than its factorization.

684128082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13974.

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 684128082 is about 26155.8422154592. The cubic root of 684128082 is about 881.1418038486.

The spelling of 684128082 in words is "six hundred eighty-four million, one hundred twenty-eight thousand, eighty-two".