6681350407 has 4 divisors (see below), whose sum is σ = 6681590776. Its totient is φ = 6681110040.

The previous prime is 6681350383. The next prime is 6681350419. The reversal of 6681350407 is 7040531866.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6681350407 - 2²⁷ = 6547132679 is a prime.

It is a super-2 number, since 2×6681350407² = 89280886522238131298, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6681350407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681350497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72069 + ... + 136222.

It is an arithmetic number, because the mean of its divisors is an integer number (1670397694).

Almost surely, 2^6681350407 is an apocalyptic number.

6681350407 is a deficient number, since it is larger than the sum of its proper divisors (240369).

6681350407 is a wasteful number, since it uses less digits than its factorization.

6681350407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240368.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 6681350407 is about 81739.5278124360. The cubic root of 6681350407 is about 1883.4528373765.

The spelling of 6681350407 in words is "six billion, six hundred eighty-one million, three hundred fifty thousand, four hundred seven".