6380709 has 4 divisors (see below), whose sum is σ = 8507616. Its totient is φ = 4253804.

The previous prime is 6380681. The next prime is 6380741. The reversal of 6380709 is 9070836.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6380709 - 2⁷ = 6380581 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 6380709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6380749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063449 + ... + 1063454.

It is an arithmetic number, because the mean of its divisors is an integer number (2126904).

Almost surely, 2^6380709 is an apocalyptic number.

It is an amenable number.

6380709 is a deficient number, since it is larger than the sum of its proper divisors (2126907).

6380709 is a wasteful number, since it uses less digits than its factorization.

6380709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126906.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 6380709 is about 2526.0065320581. The cubic root of 6380709 is about 185.4768220811.

Subtracting from 6380709 its sum of digits (33), we obtain a square (6380676 = 2526²).

The spelling of 6380709 in words is "six million, three hundred eighty thousand, seven hundred nine".