686876381310 has 128 divisors (see below), whose sum is σ = 1983584378880. Its totient is φ = 148705455744.

The previous prime is 686876381299. The next prime is 686876381353. The reversal of 686876381310 is 13183678686.

It is a super-2 number, since 2×686876381310² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22037157 + ... + 22068303.

It is an arithmetic number, because the mean of its divisors is an integer number (15496752960).

Almost surely, 2^686876381310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686876381310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (991792189440).

686876381310 is an abundant number, since it is smaller than the sum of its proper divisors (1296707997570).

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

686876381310 is a wasteful number, since it uses less digits than its factorization.

686876381310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36710.

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 686876381310 in words is "six hundred eighty-six billion, eight hundred seventy-six million, three hundred eighty-one thousand, three hundred ten".