6783997 has 8 divisors (see below), whose sum is σ = 7526880. Its totient is φ = 6062160.

The previous prime is 6783991. The next prime is 6784013. The reversal of 6783997 is 7993876.

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 6783997 - 2⁷ = 6783869 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 6783997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6783991) 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, 4578 + ... + 5875.

It is an arithmetic number, because the mean of its divisors is an integer number (940860).

Almost surely, 2^6783997 is an apocalyptic number.

It is an amenable number.

6783997 is a deficient number, since it is larger than the sum of its proper divisors (742883).

6783997 is a wasteful number, since it uses less digits than its factorization.

6783997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10523.

The product of its digits is 571536, while the sum is 49.

The square root of 6783997 is about 2604.6107194742. The cubic root of 6783997 is about 189.3049117419.

The spelling of 6783997 in words is "six million, seven hundred eighty-three thousand, nine hundred ninety-seven".