6691884293 has 8 divisors (see below), whose sum is σ = 6984938688. Its totient is φ = 6399005184.

The previous prime is 6691884271. The next prime is 6691884307. The reversal of 6691884293 is 3924881966.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6691884293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6691884203) 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, 37430 + ... + 121592.

It is an arithmetic number, because the mean of its divisors is an integer number (873117336).

Almost surely, 2^6691884293 is an apocalyptic number.

It is an amenable number.

6691884293 is a deficient number, since it is larger than the sum of its proper divisors (293054395).

6691884293 is a wasteful number, since it uses less digits than its factorization.

6691884293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87643.

The product of its digits is 4478976, while the sum is 56.

The square root of 6691884293 is about 81803.9381264741. The cubic root of 6691884293 is about 1884.4421413694.

The spelling of 6691884293 in words is "six billion, six hundred ninety-one million, eight hundred eighty-four thousand, two hundred ninety-three".