6672779 has 2 divisors, whose sum is σ = 6672780. Its totient is φ = 6672778.

The previous prime is 6672773. The next prime is 6672797. The reversal of 6672779 is 9772766.

Together with next prime (6672797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6672779 - 2¹⁶ = 6607243 is a prime.

It is not a weakly prime, because it can be changed into another prime (6672773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3336389 + 3336390.

It is an arithmetic number, because the mean of its divisors is an integer number (3336390).

Almost surely, 2^6672779 is an apocalyptic number.

6672779 is a deficient number, since it is larger than the sum of its proper divisors (1).

6672779 is an equidigital number, since it uses as much as digits as its factorization.

6672779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 44.

The square root of 6672779 is about 2583.1722745493. The cubic root of 6672779 is about 188.2647074652.

The spelling of 6672779 in words is "six million, six hundred seventy-two thousand, seven hundred seventy-nine".