686822760000 has 1680 divisors, whose sum is σ = 2822877889920. Its totient is φ = 163537920000.

The previous prime is 686822759981. The next prime is 686822760031. The reversal of 686822760000 is 67228686.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 9673559965 + ... + 9673560035.

Almost surely, 2^686822760000 is an apocalyptic number.

686822760000 is a gapful number since it is divisible by the number (60) 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 686822760000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1411438944960).

686822760000 is an abundant number, since it is smaller than the sum of its proper divisors (2136055129920).

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

686822760000 is a wasteful number, since it uses less digits than its factorization.

686822760000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

Adding to 686822760000 its reverse (67228686), we get a palindrome (686889988686).

The spelling of 686822760000 in words is "six hundred eighty-six billion, eight hundred twenty-two million, seven hundred sixty thousand".