6420683 has 2 divisors, whose sum is σ = 6420684. Its totient is φ = 6420682.

The previous prime is 6420599. The next prime is 6420697. The reversal of 6420683 is 3860246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6420683 is a prime.

It is equal to p₄₃₉₇₁₅ and since 6420683 and 439715 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (6420383) 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 as a sum of consecutive naturals, namely, 3210341 + 3210342.

It is an arithmetic number, because the mean of its divisors is an integer number (3210342).

Almost surely, 2^6420683 is an apocalyptic number.

6420683 is a deficient number, since it is larger than the sum of its proper divisors (1).

6420683 is an equidigital number, since it uses as much as digits as its factorization.

6420683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 6420683 is about 2533.9066675787. The cubic root of 6420683 is about 185.8633424070.

The spelling of 6420683 in words is "six million, four hundred twenty thousand, six hundred eighty-three".