687097573344 has 576 divisors, whose sum is σ = 2642723193600. Its totient is φ = 171672431616.

The previous prime is 687097573343. The next prime is 687097573373. The reversal of 687097573344 is 443375790786.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687097573343) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10424139 + ... + 10489845.

It is an arithmetic number, because the mean of its divisors is an integer number (4588061100).

Almost surely, 2^687097573344 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 687097573344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1321361596800).

687097573344 is an abundant number, since it is smaller than the sum of its proper divisors (1955625620256).

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

687097573344 is a wasteful number, since it uses less digits than its factorization.

687097573344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65772 (or 65751 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 63.

The spelling of 687097573344 in words is "six hundred eighty-seven billion, ninety-seven million, five hundred seventy-three thousand, three hundred forty-four".