6691682340 has 144 divisors (see below), whose sum is σ = 23691612672. Its totient is φ = 1496971008.

The previous prime is 6691682311. The next prime is 6691682453. The reversal of 6691682340 is 432861966.

It is a super-2 number, since 2×6691682340² = 89557225078935751200, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2722 + ... + 115718.

It is an arithmetic number, because the mean of its divisors is an integer number (164525088).

Almost surely, 2^6691682340 is an apocalyptic number.

6691682340 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 6691682340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11845806336).

6691682340 is an abundant number, since it is smaller than the sum of its proper divisors (16999930332).

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

6691682340 is a wasteful number, since it uses less digits than its factorization.

6691682340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113066 (or 113061 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 6691682340 is about 81802.7037450474. The cubic root of 6691682340 is about 1884.4231844481.

The spelling of 6691682340 in words is "six billion, six hundred ninety-one million, six hundred eighty-two thousand, three hundred forty".