6377639 has 2 divisors, whose sum is σ = 6377640. Its totient is φ = 6377638.

The previous prime is 6377633. The next prime is 6377641. The reversal of 6377639 is 9367736.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6377639 is a prime.

It is a Sophie Germain prime.

Together with 6377641, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 6² + 3¹³ + 7 + 7 + 6³ + 3¹⁴ + 9² .

It is a junction number, because it is equal to n+sod(n) for n = 6377596 and 6377605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6377633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3188819 + 3188820.

It is an arithmetic number, because the mean of its divisors is an integer number (3188820).

Almost surely, 2^6377639 is an apocalyptic number.

6377639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6377639 is an equidigital number, since it uses as much as digits as its factorization.

6377639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 41.

The square root of 6377639 is about 2525.3987803909. The cubic root of 6377639 is about 185.4470706752.

The spelling of 6377639 in words is "six million, three hundred seventy-seven thousand, six hundred thirty-nine".