6380639 has 2 divisors, whose sum is σ = 6380640. Its totient is φ = 6380638.

The previous prime is 6380629. The next prime is 6380657. The reversal of 6380639 is 9360836.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6380639 - 2⁴ = 6380623 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 6⁴ + 3⁵ + 8³ + 0 + 6⁴ + 3¹³ + 9⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 6380599 and 6380608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6380629) 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, 3190319 + 3190320.

It is an arithmetic number, because the mean of its divisors is an integer number (3190320).

Almost surely, 2^6380639 is an apocalyptic number.

6380639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6380639 is an equidigital number, since it uses as much as digits as its factorization.

6380639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 6380639 is about 2525.9926761572. The cubic root of 6380639 is about 185.4761438166.

The spelling of 6380639 in words is "six million, three hundred eighty thousand, six hundred thirty-nine".