6783961 has 4 divisors (see below), whose sum is σ = 6797952. Its totient is φ = 6769972.

The previous prime is 6783949. The next prime is 6783971. The reversal of 6783961 is 1693876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6783961 - 2⁵ = 6783929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6783971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6241 + ... + 7246.

It is an arithmetic number, because the mean of its divisors is an integer number (1699488).

Almost surely, 2^6783961 is an apocalyptic number.

It is an amenable number.

6783961 is a deficient number, since it is larger than the sum of its proper divisors (13991).

6783961 is a wasteful number, since it uses less digits than its factorization.

6783961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13990.

The product of its digits is 54432, while the sum is 40.

The square root of 6783961 is about 2604.6038086435. The cubic root of 6783961 is about 189.3045768858.

It can be divided in two parts, 6783 and 961, that added together give a square (7744 = 88²).

The spelling of 6783961 in words is "six million, seven hundred eighty-three thousand, nine hundred sixty-one".