6399320 has 32 divisors (see below), whose sum is σ = 14504400. Its totient is φ = 2540928.

The previous prime is 6399319. The next prime is 6399331. The reversal of 6399320 is 239936.

It is a d-powerful number, because it can be written as 6³ + 3⁹ + 9² + 9⁷ + 3¹³ + 2¹¹ + 0 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5771 + ... + 6789.

Almost surely, 2^6399320 is an apocalyptic number.

It is an amenable number.

6399320 is an abundant number, since it is smaller than the sum of its proper divisors (8105080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6399320 is a wasteful number, since it uses less digits than its factorization.

6399320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187 (or 1183 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 6399320 is about 2529.6877277640. The cubic root of 6399320 is about 185.6569775274.

The spelling of 6399320 in words is "six million, three hundred ninety-nine thousand, three hundred twenty".