685913184 has 216 divisors, whose sum is σ = 2226467880. Its totient is φ = 207852480.

The previous prime is 685913171. The next prime is 685913201. The reversal of 685913184 is 481319586.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (216).

Its product of digits (207360) is a multiple of the sum of its prime divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 62355739 + ... + 62355749.

Almost surely, 2^685913184 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685913184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1113233940).

685913184 is an abundant number, since it is smaller than the sum of its proper divisors (1540554696).

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

685913184 is an frugal number, since it uses more digits than its factorization.

685913184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65 (or 16 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 685913184 is about 26189.9443298377. The cubic root of 685913184 is about 881.9075288310.

The spelling of 685913184 in words is "six hundred eighty-five million, nine hundred thirteen thousand, one hundred eighty-four".