687324597696 has 504 divisors, whose sum is σ = 2366943126912. Its totient is φ = 189694771200.

The previous prime is 687324597647. The next prime is 687324597719. The reversal of 687324597696 is 696795423786.

687324597696 is a `hidden beast` number, since 6 + 8 + 7 + 3 + 24 + 597 + 6 + 9 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 36720436 + ... + 36739148.

It is an arithmetic number, because the mean of its divisors is an integer number (4696315728).

Almost surely, 2^687324597696 is an apocalyptic number.

687324597696 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687324597696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1183471563456).

687324597696 is an abundant number, since it is smaller than the sum of its proper divisors (1679618529216).

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

687324597696 is a wasteful number, since it uses less digits than its factorization.

687324597696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18801 (or 18777 counting only the distinct ones).

The product of its digits is 823011840, while the sum is 72.

The spelling of 687324597696 in words is "six hundred eighty-seven billion, three hundred twenty-four million, five hundred ninety-seven thousand, six hundred ninety-six".