6421674079 has 2 divisors, whose sum is σ = 6421674080. Its totient is φ = 6421674078.

The previous prime is 6421674067. The next prime is 6421674097. The reversal of 6421674079 is 9704761246.

Together with next prime (6421674097) 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 6421674079 - 2⁹ = 6421673567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6421674179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3210837039 + 3210837040.

It is an arithmetic number, because the mean of its divisors is an integer number (3210837040).

Almost surely, 2^6421674079 is an apocalyptic number.

6421674079 is a deficient number, since it is larger than the sum of its proper divisors (1).

6421674079 is an equidigital number, since it uses as much as digits as its factorization.

6421674079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 6421674079 is about 80135.3484986495. The cubic root of 6421674079 is about 1858.7290503340.

The spelling of 6421674079 in words is "six billion, four hundred twenty-one million, six hundred seventy-four thousand, seventy-nine".