6920779 has 4 divisors (see below), whose sum is σ = 6928480. Its totient is φ = 6913080.

The previous prime is 6920773. The next prime is 6920791. The reversal of 6920779 is 9770296.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6920779 - 2⁷ = 6920651 is a prime.

It is a super-3 number, since 3×6920779³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6920773) 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, 2292 + ... + 4369.

It is an arithmetic number, because the mean of its divisors is an integer number (1732120).

Almost surely, 2^6920779 is an apocalyptic number.

6920779 is a deficient number, since it is larger than the sum of its proper divisors (7701).

6920779 is a wasteful number, since it uses less digits than its factorization.

6920779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7700.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 6920779 is about 2630.7373491096. The cubic root of 6920779 is about 190.5687390718.

The spelling of 6920779 in words is "six million, nine hundred twenty thousand, seven hundred seventy-nine".