6331686340 has 96 divisors (see below), whose sum is σ = 15519651840. Its totient is φ = 2124834816.

The previous prime is 6331686337. The next prime is 6331686341. The reversal of 6331686340 is 436861336.

It is a junction number, because it is equal to n+sod(n) for n = 6331686293 and 6331686302.

It is not an unprimeable number, because it can be changed into a prime (6331686341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4399341 + ... + 4400779.

It is an arithmetic number, because the mean of its divisors is an integer number (161663040).

Almost surely, 2^6331686340 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 6331686340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7759825920).

6331686340 is an abundant number, since it is smaller than the sum of its proper divisors (9187965500).

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

6331686340 is a wasteful number, since it uses less digits than its factorization.

6331686340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101 (or 2099 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 6331686340 is about 79571.8941586789. The cubic root of 6331686340 is about 1850.0059741711.

The spelling of 6331686340 in words is "six billion, three hundred thirty-one million, six hundred eighty-six thousand, three hundred forty".