686370524417676 has 864 divisors, whose sum is σ = 2183878422835200. Its totient is φ = 184596235528320.

The previous prime is 686370524417663. The next prime is 686370524417681. The reversal of 686370524417676 is 676714425073686.

686370524417676 is a `hidden beast` number, since 6 + 8 + 6 + 3 + 70 + 52 + 441 + 7 + 67 + 6 = 666.

It is a super-2 number, since 2×686370524417676² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 158186336715 + ... + 158186341053.

Almost surely, 2^{686370524417676} 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 686370524417676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1091939211417600).

686370524417676 is an abundant number, since it is smaller than the sum of its proper divisors (1497507898417524).

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

686370524417676 is a wasteful number, since it uses less digits than its factorization.

686370524417676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101 (or 5064 counting only the distinct ones).

The product of its (nonzero) digits is 1706987520, while the sum is 72.

The spelling of 686370524417676 in words is "six hundred eighty-six trillion, three hundred seventy billion, five hundred twenty-four million, four hundred seventeen thousand, six hundred seventy-six".