684873552 has 120 divisors (see below), whose sum is σ = 1997906848. Its totient is φ = 201864960.

The previous prime is 684873551. The next prime is 684873569. The reversal of 684873552 is 255378486.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684873551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213303 + ... + 216489.

Almost surely, 2^684873552 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 684873552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (998953424).

684873552 is an abundant number, since it is smaller than the sum of its proper divisors (1313033296).

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

684873552 is a wasteful number, since it uses less digits than its factorization.

684873552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257 (or 3240 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 48.

The square root of 684873552 is about 26170.0888802465. The cubic root of 684873552 is about 881.4617372815.

The spelling of 684873552 in words is "six hundred eighty-four million, eight hundred seventy-three thousand, five hundred fifty-two".