684838433688 has 32 divisors (see below), whose sum is σ = 1748523663360. Its totient is φ = 223422467360.

The previous prime is 684838433639. The next prime is 684838433689. The reversal of 684838433688 is 886334838486.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684838433689) 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, 303562008 + ... + 303564263.

It is an arithmetic number, because the mean of its divisors is an integer number (54641364480).

Almost surely, 2^684838433688 is an apocalyptic number.

It is an amenable number.

684838433688 is an abundant number, since it is smaller than the sum of its proper divisors (1063685229672).

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

684838433688 is a wasteful number, since it uses less digits than its factorization.

684838433688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607126327 (or 607126323 counting only the distinct ones).

The product of its digits is 509607936, while the sum is 69.

The spelling of 684838433688 in words is "six hundred eighty-four billion, eight hundred thirty-eight million, four hundred thirty-three thousand, six hundred eighty-eight".