6780479 has 2 divisors, whose sum is σ = 6780480. Its totient is φ = 6780478.

The previous prime is 6780463. The next prime is 6780481. The reversal of 6780479 is 9740876.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6780479 - 2⁴ = 6780463 is a prime.

It is a Sophie Germain prime.

Together with 6780481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6780419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3390239 + 3390240.

It is an arithmetic number, because the mean of its divisors is an integer number (3390240).

Almost surely, 2^6780479 is an apocalyptic number.

6780479 is a deficient number, since it is larger than the sum of its proper divisors (1).

6780479 is an equidigital number, since it uses as much as digits as its factorization.

6780479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 6780479 is about 2603.9352910547. The cubic root of 6780479 is about 189.2721832569.

The spelling of 6780479 in words is "six million, seven hundred eighty thousand, four hundred seventy-nine".