687855059652 has 192 divisors, whose sum is σ = 1795993436160. Its totient is φ = 204054681600.

The previous prime is 687855059561. The next prime is 687855059659. The reversal of 687855059652 is 256950558786.

It is a super-2 number, since 2×687855059652² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (687855059659) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59792133 + ... + 59803635.

It is an arithmetic number, because the mean of its divisors is an integer number (9354132480).

Almost surely, 2^687855059652 is an apocalyptic number.

687855059652 is a gapful number since it is divisible by the number (62) 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 687855059652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897996718080).

687855059652 is an abundant number, since it is smaller than the sum of its proper divisors (1108138376508).

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

687855059652 is a wasteful number, since it uses less digits than its factorization.

687855059652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11834 (or 11832 counting only the distinct ones).

The product of its (nonzero) digits is 181440000, while the sum is 66.

The spelling of 687855059652 in words is "six hundred eighty-seven billion, eight hundred fifty-five million, fifty-nine thousand, six hundred fifty-two".