6681347407 has 8 divisors (see below), whose sum is σ = 7636894496. Its totient is φ = 5726067552.

The previous prime is 6681347399. The next prime is 6681347419. The reversal of 6681347407 is 7047431866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6681347407 - 2³ = 6681347399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681347807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10008 + ... + 116029.

It is an arithmetic number, because the mean of its divisors is an integer number (954611812).

Almost surely, 2^6681347407 is an apocalyptic number.

6681347407 is a deficient number, since it is larger than the sum of its proper divisors (955547089).

6681347407 is a wasteful number, since it uses less digits than its factorization.

6681347407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133617.

The product of its (nonzero) digits is 677376, while the sum is 46.

The square root of 6681347407 is about 81739.5094614593. The cubic root of 6681347407 is about 1883.4525554794.

The spelling of 6681347407 in words is "six billion, six hundred eighty-one million, three hundred forty-seven thousand, four hundred seven".